Lucid dreaming (not that superpowery, but it's pretty great to be able to avoid nightmares);
Pain resistance (double-edged, because it can make me hurt myself more);
No susceptibility to addiction (this one is something I only discovered recently. I knew I never had any addiction, whether to substance or behavioral, but I never realized before how uncommon my absence of tendancy to addiction is). I suppose that's my greatest 'superpower'.