Staying positive and optimistic all the time is for me the key to a peaceful life.
In places of comfort with the people i felt good with I used to be that person who always wanted to be right when it came to discussions. I couldn't handle the feeling of losing a discussion or argument when someone came with stronger arguments than me. So i tried to convince the other person in many good or bad ways. I even remember a moment when my voice was getting louder of anger and i almost jelled at a person just to get my point right. And at the end i just felt terrible because he didn't even cared at all. And rightafter the little discussion he probably forgot what i just said. I just hated the bad feeling i used to get afterwards. It made me feel bad..
Eventually i realised that there's no way that a person would accept your point in a so called 'negative vibe'.
Further than that i changed into a person who's now quite alert when it comes with 'having my point'. I'm not trying to please everyone with just being nice all the time. I just realised that being silence in certain is situations is better than to cause a useless nonsense. Dutch people have a perfect line for this: 'Zwijgen is goud'. It means 'Silence is gold'.
For me it means, preventing myself and others to 'hurt eichother with words'.