That's a nice achievement. I actually used to work as a proofreader for a company publishing correspondence courses.
If friends don't seem to be talking to you, one strategy is to turn it round to them - say they seem to have been a bit quiet lately and you were wondering if they were OK.
Aaaaw no ... I'm sorry if I haven't answered you but i'm very very busy because of many problems that doesn't seems to end ... I really hope that you wil be stronger than me...