It sounds like you're hardening yourself. Some people may think this is a bad thing, but I believe, at least as a temporary state of mind, it can be very positive in the long run.
Hopefully, by truly not caring about outcomes, you will eventually become more objective in difficult situations or in instances where you do not succeed, and instead of dwelling on outcomes you will instinctively deal with sh*t by exploring alternative courses of action.
Just don't get stuck in this mindset (obviously easier said than done, but...) Use it to your advantage, see it as personal evolution, and embrace the next phase as soon as you can see it coming.