A situation--- please read.?

last summer i went through a very traumatic situation, very few know about it (well through me). and the people involved are and have lied about everything. how do i heal from something that really shakes you world? i want to trust again, and i dont want the memories when i think about . used to be a beautiful, pure joyful thing.. now it feels tainted and i feel disgusted. the whole situation left me feeling really illegitimized and people are talking but they dont know the truth.