When you think you just won't make it through, smile. Smile for all the great people in your life, smile for being blessed with the things you own, smile for being given this day.
Laugh until your cheeks hurt. Laugh until tears fall. Laugh with friends or laugh by yourself. Simply, laugh.
Be giddy. Get excited. Do something that will give you butterflies. Plan something in advance just so you know you have something to look forward to.
Lastly, why be anything but happy? If you don't like something, change it. If you know you would be happier somewhere else, move. YOU get to decide if you want to be happy.
Think about the past (& future) & smile, surround yourself with wonderful people & laugh, plan a trip that will make you giddy, & with every new day you are blessed with, be happy.