Every time you have free time, do something that contributes to your life in any way. It can be spiritually, mentally, or even physically. Sometimes investing in yourself is not acquiring, but rather removing to release dead weight and be able to use the available energies in something more profitable.
It is always good to smile at the anecdotes and experiences of others that might add value to your life. It is perfectly normal and desirable to feel good for others, but there are times when not everything goes well in life and you also absorb those experiences. When does this become a problem? When you become the emotional repository of others.