Gemini: Mood Swings that are Faster Than the Hardest Rain Drops

Sometimes, I don't know, how to feel. 

Should I be grateful our should I complain about whatever I lack? 

Should I cry or should I rejoice and be glad all of the time 

I don't know. 

I heard it's all about having a healthy balance of good and bad.. But I only want the good... that's not realistic though.