...I have tried, in Merleau-Ponty's words, "to give the past not a survival, which is the hypocritical form of forgetfulness, but a new life, which is the noble form of memory."
Out of all the possible choices, I suggest falling in love. Not only will it destroy everything you believe about yourself, it will also recommend that you not believe anything else at all.
(Do I sound like a heartbroken pessimist? I certainly hope so.)