If there were only 3 things that you could work on for your present self (more on past & future selves in our next episode) it are these. 

1. Gratitude for what you have (gives perspective on present state and others less fortunate).

2. Generosity for giving more value than what you take.

3. Mindset - self awareness with a positive-, growth-, optimistic- mindsets. 

Work on these 3 collectively to foster a more happiness and positivity outlook.