Often you have something in mind. But you don't know how it will happen. You can't plot your long term plan in advance with precision. You have to start walking by taking small steps. As you start to walk, the way appears.
Every step you take gives you new insight. This is a practical insight. Only if you have taken that step, you will be able to learn. Otherwise, it will remain an untested theoretical knowledge. The strength of the theory is only when it is put in practise. So remove the fear, start taking those small steps. As you walk, you learn. As you start to walk, the way appears.