You’re lazy.

You don’t think you can make a success of it.

You’re afraid of failing. Safer to never try.

You don’t know how to.

Laziness can’t be cured. Better to stay where you are.

For the rest, there’s only one anti-dote:

Try.

It’s the only way to know whether you have what it takes.

It’s the only way to overcome the fear of failure.

It’s the only way to learn how to do it.

Try.