My first date with my husband was because a friend of mine complained one too many times about a lost scarf. It drove me nuts to hear a repeated complaint. So, I offered her my scarf in exchange for a date with my now husband.
Complaints are not a bad thing. But, if you keep them around then they are. Because the time you spend complaining about the problem is actually procrastination. This week, notice when you make the same sort of complaint. What can you do to solve that problem and remove that complaint? What would getting rid of that complaint allow you to do more of?