Between you and the goal that you want to achieve there lies a gap.
In fact, the very fact that you haven't been able to achieve that goal yet confirms the existence of the gap.
However, the gap isn't permanent. It can be closed. That is how you reach your goal.
No matter how big the gap is it can always be closed. Don't be intimidated the by the size of it. Just know that it can be closed and you have what it takes to close it.
Believe in yourself. Learn new skills that'll help you build a bridge and close that gap.
Think of the gap as a dark unchartered territory. You need a flashlight to see where you're going. Knowledge will be your flashlight and guide you the way.
The first step to close the gap is to realise there is one and then find out what you need to do to close it.
Once you've done that, it's just grit and perseverance.
Just have the will to reach the end of the line.