Everyone knows the popular saying that goes, "The Best Things in Life are Free." In all my experiences, that statement holds very true. Everything that will stay with you your whole life are usually free. The best things in life are free, people just need to see it to believe it.
One of the best things that are free are relationships, whether that is a friendship or a romantic relationship. Both of these are free (or at least should be) and we as people benefit greatly from these. Also, if you pick the right ones, they will be with you the rest of your life. Now, of course not all will go on with you forever, but there will be some that do and those are something to lean on throughout life. Through thick and thin, relationships will be a most valued asset anyone will ever find/have.
Another thing that is free throughout life, that is one of the most valued things I can think of, is family. Some families might not be the best, but for the most part, from what I've experienced and heard, family is there for you and don't expect to get paid for being there. You can't pick your family and they can't pick you, yet they are there for you and love you no matter what. Those traits are something you just can't buy. Family is another thing that can be with you through your entire life and you have the opportunity to create your own family and continue the cycle.
Something that a lot of people take for granted, that is also free to us as humans, is the Earth itself. The Earth gives us plenty of sights and sounds that sometimes feel out of this world amazing, and the Earth doesn't get paid for it and it is all free. Nature can cheer you up when you're feeling down, like when you walk outside and it is nice and warm and sunny. Things like that just cheer you up so much and guess what, it's all free.
These are three things that are a part of everyday life and all are free, and will always be free. These things will be with you your entire life and will boost life in general for you. There are lots of things that can be bought to keep you happy, for what seems like forever, but these three things will be with you for good and only they will bring you true happiness.