Try keeping a gratitude journal and experience the change that takes place inside of your mind, heart, and overflows to your life. This works well in marriages as well. Stop and reflect on three things you are grateful about your spouse and why. Share these with your spouse and watch what happens. I will take this one step further and ask that you only speak positive thoughts to your spouse for one week anything negative write down and hold until the end of the week. You might be amazed that by the end of the week you may not feel the need to share those thoughts with your spouse.
The father of positive psychology, Martin Seligman, recommends that individuals keep a reflective journal of three things that went well in their day to help create a more positive mindset. We do a modified version of this around the dinner table where we each discuss what our favorite part of the day was. My favorite part, of course, is hearing my little ones detail the moments that stood out to them the most. Today it was swimming at the lake, picking up a pizza, and going in the pool.