Courage is not something you have or you don’t. It is something you gain little by little by facing what you fear and seems difficult, even if it is just facing the day. If you want to become brave, start small. Try to live life a little bit better one day at a time. You may strive or you may fall, ever way keep going. You will find it gets easier as you keep at your goal.
Physical death solves nothing, only living does. I do have a ritual here geared towards “ritualistic” death, which is designed to allow one to separate from attachments from old patterns to open the door to new ones. You will still need to do the work to change, but it could be a helpful first step. Take a look at it and see if it will help.