I have no solution to the problem but sympathise.
The issue is very subjective and I feel to make it objective - we need guidance of the Gurus.
If we feel disliked or feel guilty - it is not easy to get out of that state.
There are ways in other religions where one can 'confess' and be pardoned, or meditate, or visit a counselor or even a psychiartist.
However it does does not change the views of others about you.
I struggle with the fact that 'nothing is in your control - it is Lord's Will' which I believe is true - however there may be a way out of the situation other than grinding oneself into the ground.
Does this happen because of karma (something that we did in our previous life) or because we have blown the chance to recover ourselves in this life?
I have not seen any teachings on the subject in the SGGS or sakhis which may shed light.
The process of getting out of 'being disliked' or 'depression' or 'guilt' seems ailien to Sikhi?
To become all white and clean is not simple or quick process with peer pressures, society and the enviornment - time does help but we collect a lot of enemies on the way.
One cannot isolate oneself - that will only worsen the problem.
May be the enlightened can suggest what the Gurus would have suggested to their congregation of the time?