“Some people find fault like there was a reward for it.” Zig Ziglar
For years I have been encouraging individuals who are unhappy to change from being fault finders to being good finders. I encourage them to make a list of all the things they like, admire, or appreciate about their job, spouse or friends. Then I encourage them to enthusiastically verbalize those things in front of the mirror each morning and evening.
The more you recognize and express gratitude for the things you have, the more things you will have to express gratitude for, try it and see how it works for you.