Who else can be your best friend, other than your mind anchored to your Ananadamoy kosha, the Spirit body, the soul or consciousness body, deep within you from where all your life energies and bliss is flowing all the time? Only your soul is your own, in the truest sense. Even your body is not yours! Live in soul- consciousness, all anxieties and stress will disappear; only ananda, your root swabhava will remain!
You are Ananda!