Mind your own (dxmn) business.
There is one fool-proof thing you can do to be happy, and that is to bring back that phrase from your elementary school days and MYOB.
Focus on building your own foundation.
Don't try to include yourself in business you're not a part of.
I find that it is very difficult for some people to do this. There are many people who really thrive off of the attention of others. There are also many people who like to know everything that is going on. Then there are people like me, who could really care less about what is going on. If it doesn't concern me, then I won't butt into it. I think I'm the kind of person who really only focuses on 3 things: what I'm doing to better myself, what I want out of my relationship, and what I want with family. Those are the only three things that I really think about. If you are my friend, and you need help, then I will reach out to you. If you are my friend, and you ask for advice, then I'll sit there and listen to you and give you advice if you need it. Other than that, I will go about my day, do what I need to do, come home, and call it a day.
Don't try and interject yourself into business you're not welcomed into. That's where drama is created, that's how gossip starts, and that's how friendships are ruined. Know your boundaries with people. Don't be so concerned with what others are doing. I think this thought is coming from something that recently happened to me.
I'm new to Germany (can I even say that? I've been here for four months)... and I haven't spent too much time telling people about myself. So it comes to my surprise when I hear someone is talking about my personal life like they talk to me on a personal, one-on-one basis. This is where I have a large problem. I was very upset at hearing this news, and I was furious for a couple of days. Then I sat and I thought about it, did my little meditation breathing exercise, and decided to not give it any thought. Because why waste my time being angry at someone who only wants attention? So ask yourself that. Take a step back and look at the bigger picture.
Should you waste your time and energy being mad at someone who isn't benefiting your happiness? Or are you just going to keep on keepin' on being all happy and just brush it off? The only person who really knows you - is yourself. If you know that what you're doing is for your happiness, then who cares what others may think? I mean, don't go around doing things that could cause people to question your morals and values, that's never good, but don't live your life in fear. Don't live your life to please others that mean very little to you. If people who mattered were really concerned about you, they'd go directly to you and not to the people you know. Know the difference between concern and just being nosey.
How people treat you is their karma, how you react is yours.
So again - stay focused on you and your small circle, and if there are people who want to talk about you and make you lose face, just remember that they're the ones losing face by gossiping. Don't stoop down to that level. Don't try to get even. The universe has it's own way of making sure people get what they put out.