Nolan served a three-match ban after being sent off against Liverpool in early December before being suspended for four games after his dismissal at Fulham on New Year's Day.
The 31-year-old returned from his latest ban in Tuesday night's 3-0 home defeat by Manchester City in the second leg of the Capital One Cup semi-final which saw West Ham lose 9-0 on aggregate.
Former Newcastle midfielder Nolan has acknowledged it has been a tough time in recent weeks and he is eager to demonstrate he has put his disciplinary issues behind him.
"The last few weeks have been among the most difficult of my career - certainly on a par with when I joined Newcastle and they got relegated," Nolan told the Evening Standard.
"What's happened to me over the last month was very out of character. I've never been through anything like that before, but I have now and I'm hoping to prove, by the end of the season, that I've come through it.
"Things have been made easier by the support I've had from my family, friends and Lee Richardson, the club psychologist. It's at times like this you appreciate who is next to you, who is around you, and my support system is fantastic.
"I've had to take it on the chin, it's been dealt with, the gaffer has had his say and rightly so, he's told me what he expects of me and now it's up to me. I have to deal with it and I'm big enough, strong enough and ugly enough to do that.
"I've apologised to all the lads and they've said, 'we all make mistakes, let's just forget about it and get on with it'. If it had happened to anyone else they would have got the same reaction from me but it was nice to know I had the full support of all those boys.
"I've been pretty low but thankfully I had my family and friends. Without them, you don't know how dark it could have got. I hope I can repay the faith of people."