Re: accepting help from others.
Before I donated, I had difficulties with this, too. I was raised to be completely independent and to neither ask for nor accept help. But during the pre-surgery period, a friend asked me if I like to help others when they are in need. "Of course!" I said. She responded, "Then you should allow others to do the same for you. It's kind to help and it's kind to let others help." That conversation really changed my way of thinking and I still remember it often.
I am eternally grateful for all the friends and family (and even coworkers and acquaintances) who came forward with offers to supply meals, walk our dogs, clean our cats' litterbox (these are really good friends!), drive us to appointments, take me grocery shopping, etc. My biggest (pretty much only) worry before donating was being able to take care of everything that needed to be done, since we would both be having surgery at the same time. I needn't have worried about that in the slightest.
I learned a lot about myself during the whole process, and probably my biggest takeaway was the realization that it's not weak to accept help when it is needed. Instead, it is the responsible, mature thing to do, and it builds bonds and strengthens the whole group (family, community, whatever).
Kara