Is it normal for me to feel the way i do?

When it comes to confrontation, I usually take my time. I wait a while before I let someone know that an action they're doing is effecting me. The reason to why I do this is because I don't want to call someone out right away because I feel like people have their "off" days where they're mean, but usually they aren't mean. So basically, I give people the benefit of the doubt. But when it comes to an unbearable point, that's when I decide I got to talk to the person and express my emotions. But I noticed that after I express my emotions, I'm not okay with the idea of the other person changing their ways JUST because of what I said. I feel like if they want to change then they already would have done something. I go off on a short tangent just to let the know how I feel but eventually I almost always tell them I'll change the way I act, how I handle the situation. Long story short, I express my opinions in hope that the person changes but then I change my mind and decide if they wanted to change, then they would have. So, I end up telling them I'll change how I react to the situation rather than them just doing what I originally wanted them to do. Is that normal?