For me, one of the techniques to fight fear is "Planning the response to the worst case scenario"; because once you have planned response to the worst case scenario, only better can happen to you. Once again, I am not suggesting that we should spend hours on thinking about worst case scenario, but just giving a thought "What is worst that can happen to me and how I am going to response if it does happen?". Also, I only use worst case scenario technique if my intuition suggests that even after positive thinking and positive attitude I need to be bit more circumspect.
What I have suggested here is working well for me a made my Quality of Life (QoL) much better. I wish that you also experience Joyful Living by experimenting and internalizing these thoughts.