These ideas all might ring true in other area of life, but they don’t have to apply to your singing voice. Singing does not necessarily have to render you “open” and vulnerable to the listener. Try to disconnect from these notions. The best way to do so is to see your voice is an instrument, and your singing is a product of your creativity and skill. Your singing is not a reflection of your “soul” (so to speak).
Finally, don’t apply blending effects (reverb, chorus, delay) too heavily in the mix as they may stand out much more noticeably after mastering boosts volume and brings out details in the sound.