These are main ones for me. I'll likely get into lesser, more specific ones another time.
Regret Nothing:
Life happens and I realized early on that my decisions, at the time of them, were right for me. People regret things when they see the opposing side of situations or after the consequences. If people really felt the opposite about something, they would make the "right" decision from the start. Regret is beating a dead horse. I've determined that I can think "This could have gone differently" and still omit a lot of regret and dwelling.
Assess the Positive:
No situation is 100% bad. I refuse to believe it, no matter the argument. There is always something a situation can teach us or someone else. There is always a way that we are changed or benefited, either immediately or in the longrun. I choose to view the positive, because it helps me to learn and grow. It also keeps me from being caught up in that realm of regret and dwelling.
Accept Faults
I don't mean every fault, but the ones that don't adversly affect others and that the individual can accept of themselves. If you are down on yourself or others about faults, you are only proving to be a hindrance. To me, acceptance is the first step toward change. The fault may stay, but the viewpoint may alter. The fault itself may change. Either way, it is better to accept what is reasonable.
Maintain Individualist Life Standards
Everyone's life is their own. Living it to the fullest may range from climbing mountains and bungee jumping right down to sitting in cafes and drinking a glass of wine once a day. I've learned that my life standards are just as good as anyone else's. They don't need to be changed because other people want more or less than I do. Majority rule doesn't apply here, as long as it doesn't really impede on others. I don't want much out of life. I am no less a person for that and my life will be no less lived by my standards; the important standards.
Balance Self-Sacrifice and Self-Preservation
It's been in my nature to care too much or overextend myself to people. I still do this when I care enough. I will give everything I possibly can to the people I love and consider close. Recently, self-preservation has been taking over beyond basic interactions. A person must realize when they are important. A person must also realize when their importance can be compromised for others. There is a balance and it is in us to find that balance and hone it. It is also in us to determine what is worthy of either side.