1. Memorise something daily:
Try to learn and memorize new things daily which would help your brain become sharper and also try to have a huge library of quotes to come out with at any moment. Some of the best options could be philosophies, poetries and great sayings.
2. Its better to reduce your attachment to possessions: People who have high dependency and desire about their belongings and property will have a lot of trouble when they are separated from them or these things are being lost through some way. If you try to reduce your intense desire for something and become a person of minimal needs, your life would turn out to be more cheerful.
3. Learn to focus more more on the present: Whatever has had happened in the past is unchangeable. So its of no use to ponder upon it every now and then. Learn from the past and make sure you do not repeat that in future. The future is nothing but a result of your actions today.
4. Smile more often: Smile as often as you can, at anyone whom you like or at any pleasant occasion which makes you happy. As, it is the natural way to keep yourself happy and content. Many of us join yoga and other fitness centers where we even practice laughing out louder activities. This particular exercise is said to enhance and increase you life span. It is a very powerful tool that is utilized less and less as we grow older and need happiness more than ever.