The 48-year-old actor has spent a large part of 2012 on film sets, including the movie adaptation of hit musical "Les Miserables", and the heavy workload has taken its toll on his personal life, with Crowe reportedly splitting from wife Danielle Spencer last month, reported Daily Star online.
The actor recently wrapped Darren Aronofsky's biblical epic "Noah" and is preparing to shoot "Winter's Tale" with Will Smith, but he regrets taking on so many jobs as he desperately misses his sons, Charles, eight, and six-year-old Tennyson.
In a post on his Twitter page, the actor writes, "Starting on another film set tomorrow. I need to go home and be with my children. Cannot believe how messed up my schedule has become this year."
"I sympathise. I haven't seen mine (my children) since late September. Maybe 40 days with them for the year. Won't happen again. All the best," he added.