"It may make a difference to all eternity weather we do right or wrong today." 

Your today is what makes tomorrow if you do right things you will have a good day. If you do bad things then it changes up your whole days. For example, if you see a man dropped an $100 bill and you still could catch up your decision there will make the future. If you choose to give the man the money he had dropped then you are awesome and you will have a great day. And if you choose to keep the money you are doing something bad. And then karma will go after you and you will receive the consequences for the action you took. Or if someone is telling you to do drugs with them and they say that they resolve your problems what do you do. You should contemplate because you already know what to do. If you say yes then karma will get you and you will be bargaining. If you say no then you will be happy that you made that choice because you won't be the one who did the drugs.