Main cause of our dissatisfaction is our expectations. If we don't expect anything or will expect minimum we will be mostly happy. Do any job without attachment. Attachment cause expectations that cause pain if desire don't fulfilled. We can't control every thing. And every thing not happen accordingly, so get ready for unexpected results. Do one job and than go for another whenever you feel old one is now over. Thank you Note: here I try to express my self in minimum words,please don't go on words: )