It's hard to say for me when I become unhappy because in rare cases such a thing happens. I just open my PC and start watching anime. I can't say if it makes me happy or not but it helps me not to remember the reason for my unhappiness.
You said you stay in font of the mirror and praise your self but in my case, I only go in front of the mirror when I need to go outside only.
!LUV
RE: The Pursuit Of Happiness: Just Enough For Each Day