Comment by godelski
I want to second this.
The big lesson is recognizing how far a little help goes.
Often it's not much for the person who gave you help, but the result cascades. Nobody is completely self made. We do a lot of work to push ourselves forward but it still relies on other people.
So as you grow, take a chance on others. Don't just look at who they are but who they want to become. The world is full of gates that are extremely difficult to pass through but trivial to hold open for others. It can be making introductions, passing along a resume, or just taking the time to say hi and be friendly.
Recognize that the world is noisy and that these little things help us navigate. We solve big problems by breaking them down into many little problems, so it should be easy to understand how solving little problems makes progress towards solving big ones. Even if you don't know what that big problem is. Just try to make the world a better place. Recognize your struggles and when you can, help others to not face the same issues. You can't solve everything and you won't be perfect, but as you've recognized, a little can go a long way. So do that.
People aren't born wizards. We all start as noobs. Don't forget the journey