Stop feeling sorry for yourself. Everybody is an imposter on some level. Everybody is making it up as they go along. Once you figure that out, a lot of things start making sense. The solution to feeling like an imposter is courage and persistence. The cliche is true, if you think you can or think you can't, you're right. It sounds like you're already going down the path of least resistance, out of fear. You should probably stop doing that if you want to better your position in life.