If you change your mind

I've recently started to come to the realization that, truly, everything is about perspective. Regardless of the situation around me, I can influence my every reaction to it simply based on my perspective. If I walk into something expecting to be upset, angry or remorseful, then that's exactly what's going to happen. Or rather, if I step into something expecting to be optimistic, peaceful or humorous, then that's (usually) how I feel.
I really need to start taking that into consideration more.