Are your life is driven by resentment and anger?  

Very true, living your life with anger will be a senseless thing to do. Better to change the routine before its getting worse. God bless!

I blow my top, and then I tell myself that I have a good life, and I don't need to let anything interfere in it. Anger is perfectly healthy as long as it's under control; resentment is a pointless exercise and will only lead to bitterness. It's okay to vent, as long as it's a short, to the point vent and not a protracted tirade against everyone and everything.

This is quite different for me now from when I was, say, 20 years old. It was then difficult to understand why people could be so insensitive and unpleasant, and I could get very bitter about it.

In the words of the Bryan Adams song: "The years have made me old, but made me wise". These days I see little point hanging on to any bitterness or resentment. If I were to do so, it would serve no purpose, so where would it get me? Better, even at my age, to move forward and put the source of discord behind you.