Give a million, get a million

I was always told in school that energy is neither created nor destroyed. So how did it get there, and what is its purpose? I soon realized that nobody had an answer, and nobody ever will. Sometimes we just have to accept the idea as it is, and run with it. Let us take this energy idea and apply it to our every day life. If energy is neither created nor destroyed, it would also be true that the value that I give will come back. Right?
If I give to others by providing a product or service, I will get back value in the form of money, respect, gratitude, product, service, etc. If the energy idea is true, that means that whenever I give something of value, I shall receive something of value. If I put my time and energy in physical training, I will be fit. If I give money to charities, I will get some type of social gratification. If I give my time to a friend in help, I gain his/her trust. If I give, I shall receive.
So this has to be the cure to anything that we lack right? If we are struggling, then give. Because if I put in 10 hours of work everyday, and give for one whole year, I can be sure value in all forms will come back to me. And those who are selfish, those who look for shortcuts are those who will have nothing, and be nothing.
