What battles are worth fighting?

We have all been slighted, lied about, treated unfairly because of what have you…sometimes when we’re angry and we share our frustrations with others, people say ‘forget about it, they’re not worth your energy – this isn’t a worthy battle’ and sometimes we agree and let the situation go…at the expense of justice, revenge, truth, etc. I began to wonder about what battles are worthy of fighting and continuing with in my life and which would be worthy of fighting in that of the lives of others (Fluther, for example)...I think that I fight more often than necessary (or more often than others would) and it affects my sanity, I don’t let go enough because I can’t deal with leaving things be as they are when those at fault (in my opinion) have been able to continue along their wrongful path after they have wronged me (and the thoughts just consume me, the anger at someone having a wrong judgment of me even if they are irrelevant)...a lot of this has to do with certain work situations I’m dealing with and I must figure out how to deal with these issues – my instinct is to stand up for myself and to maintain dignity but to some others (like my superiors) this is certainly not a priority and so I must compromise and do what I am told…this bothers me…on the other hand, with certain people, like with my mother I have given up on certain battles because I have learned that it’s better for me to just not get into it…but if something will come up in terms of my friends, husband, children being hurt or treated unfairly, all hell will break loose and those people will pay…

So what battles are you usually involved in, if at all? Are they about you, your loved ones or about concepts and standing up for certain beliefs or ideas you consider important to always explain? Is it about certain injustice that you just can’t ignore? How does this relate to your activism?