Mark Wahlberg is ''working hard'' to be a better person.

The 'Ted' star - who recently asked for forgiveness from the man he was convicted of assaulting in 1988 - has admitted that he finds himself ''blessed'' by his acting success and wants to give back.

He explained: ''My concern is making sure that I can sleep at night and that I'm working hard to become a better person and I've been doing that for 20 something odd years, and I will continue to do that regardless.

''And I think the only reason why I'm in this situation is because I work really hard and I'm doing the right thing, and I've been very blessed. So it's important for me to not forget about where I came from and to continue to give back.''

Meanwhile, the 43-year-old actor doesn't think his critics ''understand the debt'' - the 45 days he spent in jail for the crime - he has already paid.

He told ''I can't control how [my critics] feel. I don't think they understand the privilege to every side of it. I think if people understood the debt that I've paid back to society ...

''If people understood what it's like to be a 16-year-old kid incarcerated in an adult prison at 5 foot 2 and 110 pounds, it's not a nice place to be.''