it depends how much money you got do you have enough to life from then you have to invest you know to earn more. But if you barely can life with your money you need to save for later.
Well, if you haven't got enough money to live, then how are you supposed to save? You'll have to have surpluses in your earnings for you to save them. But anyway, I think what you're trying to say is that if you have a lot of spare cash, then you should invest. Otherwise, save.
I believe that saving is a good way to promote mental health, however as it doesn't provide much of a profit, investing is preferred by me.