Life Purpose - The BIG Question

Today is the eighteenth of October, and I have been struggling as of late to find a fulfilling use of my time when I'm not doing architecture work. Yes reading God's Word and prayer are extremely important and factor a great deal into what my purpose should be, but I find it hard to think of other things to do when I'm by myself. The easiest thing to do as a Christian is to live a Christ-like life, but when you're all alone in your dorm, there's no one to show compassion to, no one to help out, to care for, only people to pray for, and that can't go on forever! So what is my purpose? I think a lot of the time, people live for this far off goal, lying somewhere in the future, and once it is achieved, they believe they'll live happily ever after and have nothing else to ever strive for again. Problem with that is, well first off it doesn't work. It's the exact same mentality that people have when they go to the store to buy happiness - it's fleeting at best. Another problem is that, for me personally, I can't think of a goal big enough that will really COMPLETE my life. Getting married - no; having kids - no; retiring - what kind of goal is that? The only thing I can think of as something to strive for is the day I enter the kingdom of heaven, which IS a valid goal that you can work your entire life towards (and not to begin another IMMENSE subject, but no, I don't mean that in the sense that one earns their ticket through works or tithings or any concrete human idea of reaching heaven - those theories are too human and typical to have come from God). And you work towards pleasing God (you can never EARN it yourself obviously) in everything that you do everyday. Sadly, I often falter at this seemingly simple goal, but that's what I mean by working TOWARDS it! At any rate, I feel as though I also need a purpose here on Earth, and I will not accept that it can be a valid life purpose to travel the world and "find myself" because if it takes that much to find one's self, then that's just TOO BAD for every single person that ever lived before the invention of modern travel! Nor will I choose, obviously, the earning of a great sum of money; that one doesn't even need explanation. Instead I think that a person's purpose needs no solid completion date, but that they achieve every day for their entire life. Loving a family of my own, letting everyone I come across feel my love for them, and living in and for Christ, can be just as powerful as the invention of a monumental technology. As I don't have a family of my own yet, and like I said, you can't show love for others when you're alone, the one thing I can't come up with is what to focus my energies on when around me, the world is still and quiet, and no one can hear my voice, and it is just the Holy Spirit keeping my soul company.