How to increase problem solving skills?

Hello everyone i'm new to programming world.And a self taught developer i have learned the principle of programming but when i try to solve a complex problem through coding its just a headache,and i wanna know how i can increase my problem solving skills?and please mention personally how you increase your problem solving skills in your journey

As me many of developers are self taught developer without a CS degree this Answers might help many of them just like me.

Thank You