The 7 Deadly Sins of Sales (And How They Quietly Kill Deals)

Salesperson having a thoughtful conversation with a potential client during a business meeting.

There’s a moment in almost every sales conversation where the outcome quietly hangs in the balance.

It’s subtle. Easy to miss.

A salesperson has walked a prospect through the solution. The conversation has been good. The prospect seems interested. There’s even a sense of momentum.

And then the moment arrives.

The salesperson feels it.

But instead of asking the final question, they pause.

They hesitate.

“Maybe I should follow up next week.”

So the conversation ends politely. A follow-up reminder gets added to the calendar. Everyone walks away feeling like the conversation went well.

But the deal slowly fades into the background.

Not because the product wasn’t good.

Not because the prospect wasn’t interested.

But because a quiet, invisible habit got in the way.

Over the years, I’ve noticed something about sales success. It’s not usually determined by talent, charm, or charisma. More often, it’s determined by the small habits that either move a deal forward… or quietly sabotage it.

I call them the Seven Deadly Sins of Sales.

The good news? Every one of them is fixable.


1. Fear

Salesperson hesitating before making an important phone call.

Fear doesn’t usually show up loudly in sales.

It rarely says, “I’m afraid to ask for the deal.”

Instead it disguises itself as patience.

  • “I’ll give them a little more time.”

  • “I don’t want to pressure them.”

  • “I’ll follow up next week.”

But hesitation has a cost. And in sales, that cost is often thousands of dollars in lost opportunities.

The solution isn’t complicated.

Start small.

Ask for something.

Ask for the meeting.

Ask if they’re ready to move forward.

Ask if they’d like to place the order.

I often talk about what I call the One Push-Up Moment. One small action that moves things forward. One moment of courage.

You’ll be surprised how often the answer is yes once you actually ask the question.


2. Procrastination

Organizing a to-do list and planning daily tasks.

Salespeople are often busy.

But busy doesn’t always mean productive.

Procrastination has a way of creeping into even the most driven professionals. The difficult call gets pushed to tomorrow. The proposal sits in drafts a little longer than it should.

Momentum disappears quietly.

One simple system I like is something I call the Do Jar.

Each morning, write down everything you need to accomplish that day. Then add one extra task to a jar. If a task sits on your list for more than three days, it goes into the jar as well.

Every morning, pull one task from the jar and complete it first.

This simple habit forces you to tackle the things you might otherwise avoid. And when your pipeline keeps moving, the pressure of stalled deals disappears.

A moving pipeline is one of the best cures for what I jokingly call commission breath.


3. Forgetfulness

We all think we’ll remember the details of every conversation.

But the truth is, we won’t.

After a few calls, a few meetings, and a few weeks of activity, details blur together. Names get mixed up. Companies start sounding familiar in the wrong ways.

And nothing erodes trust faster than forgetting something important about a prospect.

The solution is simple.

After every conversation, write a quick note.

It doesn’t need to be long. Twenty words is plenty.

Capture the prospect’s name, their company, and one or two important details about the conversation.

Better yet, log it in your CRM.

Those few seconds of discipline will save you from the awkward moment of forgetting someone’s name or confusing one account with another.


4. Verbosity

Consultant listening attentively during a conversation with a client.

Most salespeople know their product extremely well.

And that knowledge can sometimes become the problem.

When we feel confident, we talk. We explain. We add more details. We fill the silence with expertise.

But the more we talk, the less the prospect buys.

People don’t want to feel like they were sold something.

They want to feel like they made a smart decision.

That means your role isn’t to deliver a monologue. It’s to guide a conversation.

Ask better questions.

“What’s most important to you when choosing a solution like this?”

“What challenge are you hoping to solve?”

Then listen.

Sometimes the most powerful thing a salesperson can do is simply create space for the prospect to talk.

As the old saying goes, it’s better to remain silent and be thought a fool than to open your mouth and remove all doubt.


5. Dishonesty

Most salespeople don’t lie outright.

But the temptation to stretch the truth is always there. Maybe we gloss over a downside. Maybe we promise something that isn’t entirely certain.

In the short term, it can feel like it helps close deals.

In the long term, it destroys trust.

A simple question helps keep things in perspective.

Would you be comfortable if your client exaggerated the value of the check they were writing you?

If the answer is no, the same standard should apply on your side.

Transparency builds trust.

And trust closes far more deals than clever pitches ever will.


6. Familiarity

Hand extending for a handshake during a professional business meeting.

Being friendly is valuable in sales.

Being overly familiar is not.

There’s a difference between warmth and overstepping.

Too many personal jokes too early. Assuming access to someone’s time or attention. Treating a professional relationship as if it’s already a friendship.

Respect is what earns trust.

And trust is what earns business.

When in doubt, err on the side of professionalism. Relationships grow naturally over time. They don’t need to be forced.


7. Laziness

At the end of the day, sales still come down to activity.

You can’t close deals that you never pursue.

No matter how talented someone is, results require consistent action.

A simple habit can make a big difference.

Each morning, ask yourself one question:

“How many meaningful touches can I make today?”

Write the number down.

Then add one more.

That’s your goal for the day.

Over time, those extra touches compound into new opportunities, stronger relationships, and more closed deals.


A Final Thought

The interesting thing about these seven habits is that almost every salesperson has fallen into at least one of them at some point.

That’s normal.

The key isn’t perfection. It’s awareness.

Once you recognize the habit, you can change the behavior.

And small improvements, applied consistently, create powerful results.

So here’s the question worth asking yourself today:

Which one of these is holding you back the most right now?

Start there.

One improvement a day keeps commission breath away.

Next
Next

Superpower Storytelling