Hello. Interesting topic. There has been some fascinating scientific research on the best formula to make you happy. Things that you need include:
Goals, things to work towards, short, medium and long term. A reason to get up in other words. These could be holidays you are saving for and really want to do, work goals, household goals, personal achievement goals etc etc. Write a list and start with a little step towards some of these.
Connections - time with people who mean something, time with others, Very very important. Takes a lot of effort if social life is not good, but it can always be worked on.
Giving to others - doing something nice for someone else every day; could be formal volunteering, or simply doing a random act of kindness.
Some sort of sense of belonging - to a group, a religion, a social circle, a supportive family etc.
Exercising - doing something physical.
Awareness - being in the moment, noticing what is around you, being totally present/mindful etc.
New things - keep trying NEW things. Anything random will do.
Emotions/Gratitude - looking for the good stuff. The random moments of joy even when it's really tough. Take note of those. Write them down.
Some great information on the "Action for Happiness" website, including the science behind how the above suggestions really matter. 
https://actionforhappiness.org/10-keys