The reason I suggest to do the writing about your memory is because we are so very good at fooling ourselves when we're just thinking about this stuff - this 'going in' stuff. Please do grab a pen and don't shortchange yourself on this important revelation. It's worth taking about a half hour and doing it. Things will magically come out of your pen (because you're committed to a sentence or finishing a thought), whereas if you're just cogitating this stuff, your brain will weave and bob around so it doesn't get too uncomfortable for you. Baloney. Get a pen. Write. You'll get deeper revelations.
Then the imprint. The actual physical act, as I mentioned before: bury a Big Mac. Put it in a box along with a photo of some starving kids. Commend it to the earth, along with some words about offering this food up to those who have none. Do this from the heart; sit down on the earth and talk to it. Do this as a ceremony; perhaps someone else can do some drumming or rattling. First prepare the area, smudge with burning sage or sweetgrass - if you don't have those things, grab some pine needles or anything burnable that throws off a good clean scent. It's the Intent that you're dealing with, not worrying so much about the details. There's no 'magic way' to do this. Just ceremonialize it. Then, once you've finished, zip up the ceremony somehow - I'l usually walk around the outside of the circle with my staff and close the ceremony with gratitude for spirit, and the word "Washte", which pretty much has the same connotation as Namaste, only it's the indigenous word that the Native Americans would have used.
Then the continual maintainance. That refers to the giving I was talking about earlier. On a long-term basis find a way to continually give back - it doesn't have to be a big deal, only something between you and your heart that makes things a little easier for someone else. Maybe a monthly donation to a charity you prefer - preferably one close to home that you can actually see some results. Or if a charity isn't down your alley, maybe a pledge to be a big brother or something - you know what I'm getting at. That'll be the grease that keeps your financial wheel turning.
I too share your feeling that I'm worth nothing and would certainly never deserve anyone wonderful. There's a couple tricks here I would recommend too. Can you find a picture of yourself as a baby or a young boy? Can you frame it and place it on your nightstand? Can you say good morning to him each morning and tell him you're going to take care of him today? To feed him the best food, to find a nice mate for him? This sounds so hokey but I had to do it and it worked to some degree, at least to get me started. Again, you might have a childhood memory here that needs triangulating, but in reality on something like this you can change your mindset with Love. All that means is that it takes the focus off yourself and your perceived unworthiness and focus on the situations around you. What can you bring to them to elevate the situation? Is there someone you come in contact with daily that is rather off-putting, for example - but what if you were to take the time periodically to listen to what that person had to say? If they're off-putting to you, they're probably off-putting to everyone else too. Maybe nobody listens to them at all. There are so many ways we can find to love each other, just in simple kind ways. But it does involve taking the focus of self and/or self-pity (which you don't seem to have) and getting into LIFE in a different way. One day at a time. One person at a time. One situation at a time. There a way to infuse Love into every situation in our daily lives, even if we're waiting in a line at Walmart.