Obviously, earning extra money is something that can really change your life. Money can buy you freedom in more ways than one, despite what people may say.
Earning extra money on top of your day job can improve many areas of your life:
Less stress from living paycheck to paycheck
Reduce the burden of crippling debt
More opportunities to save for a dream vacation
It can be passed on to others for social good
You can retire earlier
It can be snowballed into even more wealth