Someone, somewhere has a problem. And you have the skills to help them.
Be like a doctor or a scientist and help diagnose their pain point. Then give them a remedy. You have the skill, you just need to make sure that you finish your project to help them. (If you never finish your project to help them, you will never relieve their pain.)
Save someone from their problem.
Then save someone else.
Then save another person.
Just do it because you are the only one who can.
And if you aren’t the only one who can, do it because you are the only one who will.