If you have a desire to trade, then you just need to do it. You have already allowed fear to defeat you, so you just need to force yourself to do it without much thought.
In order to start trading you will need knowledge, so don't ever neglect them. Knowledge is the foundation of trade. But in order to become a successful trader, you need practice as a result of which you will gain valuable experience and learn to act in different situations.
I want to recommend you to plan your actions. This will teach you discipline and help cope with emotions that will certainly arise in the process of trading.
It is our emotion who sometimes bring us down, if we just let it to control our mind definitely we can do the right thing for us. Many traders have fails from their goals, even their courage turn into worries and afraid of that will happen in the future. Everything have change when can't this feelings.
Emotions are always present, how you overcome fear from anything in your life, some people gave good advice long time ago, close your eyes (or don`t) and jump! You need to face it with your fears, only way to do it is to look your fear in the eyes, confronting with it with practice, day by day. Its how you make a progress in any activity or life aspect, I don`t know how else to say it. You cant learn anything if you dont fail occasionally, its the part of learning, you didn`t fail 1000 times you found out about that ways that dont work, 1001 can be the right way.