Hi Happy,
I wonder, do you really understand all the points made? I made two that were very different from what the rest said. I couldn't understand everything you wrote, but I'll try to reply based on my best guess.
Living in the present does not mean you don't care about your future - rather there's just no fantasizing about what "might be" based on wishful thinking. It doesn't mean that I don't have goals or aspire to do anything, but I just see them as possibilities rather than something to hang on to in lieu of the present reality. It's not a matter of "let us eat and drink, for tomorrow we will die."
As for ownership, it is also a matter of being realistic. Often we will say we "have friends", or "have" the brotherhood or what have you - but is it really something that is absolutely yours, and something that can never be taken away from you? Most people don't like to think about that, but I think it's just a matter of what expectations you have. If you expect nothing, then anything you receive is a gift, even if it is temporary.
Friend, I would invite you to look at where your hope lies, and see if they are real. A key point is where in time you are placing your hope, but also in what. I am glad you are happy, but if that happiness is not based on anything substantial then you may be in for a big disappointment.