Momma,
The key to keeping your cool is to remember that forgiveness is an important ingredient. It is too easy to loose this cool on a public forum. It is for me.
Just as we receive forgiveness for sins that we have committed, we must forgive those who grate on us. It can be difficult at times. We know that Jesus said to love God with all our heart, soul and mind....and others as ourselves. We must first love ourself before we can love others. I mean truly love ourselves and be happy with ourselves in the knowledge that we are the best we can be.
Having said that, there is one person IRL that I have a real problem with. I avoid them if possible and keep my mouth shut when I cannot. I am working on this and I know how hard it is with one person. I can't imagine those with many obstacles.
A bump in the road slows us down a little bit, but does not bring us to a halt.