Both trading and Investing are good ways to earn money. Both methods are not a 100%  sure win situation for you, because you may lose or win on these two, the higher you invest then, the higher the amount that you can have, then the lower you invest then, the lower the reward, as well as with trading, both things have similar way for you to earn, both methods use the inflation and deflation of the bitcoin.

To become successful in both methods, you should have an excellent knowledge. It is not a simple thing as what the OP has said. You should increase your skills and knowledge about that before trying to invest and trade, because it is like a risk-taking situation, you will rely on your predictions if you are going to earn from it. The thing in investing and trading is, it is so impossible for you to lose from it if you know the situation of the current market.