I think I am naturally a pretty positive person, excepting the time I was drinking heavily. Like everyone, negative thoughts do still crop up. If I find them sucking me in, I try to figure out why I am letting that happen and what I can do to stop it.
For instance, I went away this past weekend on business. I hired a dogwalker I have used in the past. When I got my bill it was substanitally higher than 6 months before. Adding insult to injury they charged me for an overnight stay which was necessary since they left dog food out and my dogs binged and I wasn't comfortable with the dogs being alone because of that. So I am pissed. I have taken a step back and realized that I can 1. steam over it fruitlessly or 2. say something. I am going to say something even though I will probably end up paying what they say I owe. I am non-confrontational by nature but I have learned that if I am getting upset internally instead of confronting a person than that isn't good.
In fact I'm going to send her an email right now!