You need to have more happy friends and as you have more happy friends, you can observe how come they can be so happy.

You visit people who are misfortune such as at old folks home and orphanage then you will know how lucky you are... and when you start to "compare" you know you are not alone.

You need to be more creative and innovative like Steve Job, so you still live in the boring cycle (the cycle is study -> work -> married -> children -> children grow up -> die) but instead in a creative and innovate way.

You can do the samething, over and over again but do it differently everytime so you EVOLVED.

You have to forget the past by focusing somewhere. I would ask you to focus on your STRENGTH... your HOBBIES... to engage yourselves.. how can you do something great from your STRENGTH to benefits the people around you???

Finally, "The Positive Thinking People Always See Opportunity In Every Trouble. The Negative People Always Give Excuses" >>>> Practice this POWERFUL MINDSET.. and Happiness is your friend.