This is interestingly something that my husband has struggled with for years, moreso than me. I tend to be a very positive person, while my husband tends to react to the negatives much quicker, which usually burns bridges. I, on the other hand, simply keep to myself for the most part. I grew up in a really awful living situation and it taught me to find the small pleasures in life to push you along. Negatives will always be there. People usually have motives behind their relationships as well as everything else that they do. The best thing you can do for yourself is to focus on what builds your own life and purpose. Look for the small pleasures in your own life and experiences, it will help fuel your life forward in a positive manner.