Former “Hot Boys” rapper B.G. says he’s mentally prepared to begin his 14 year prison sentence for gun possession and witness tampering … saying he’s focusing on the light at the end of the tunnel.

As we previously reported, B.G. — aka Baby Gangsta … aka Christopher Dorsey — pleaded guilty to crimes stemming from a messy 2009 traffic stop.

Now, B.G. released a statement through his rep Tracey Smith … saying, “I am relieved I found out what my fate was yesterday because I was facing 30 years and my case kept getting pushed back.”

The 31-year-old adds, “I am just ready to get my sentence started because it’s not RIP BG it’s FREE BG … I feel happy and blessed that I will still be a young man and still be able to see daylight because I am someone, a dad, a brother and a son.”

B.G. says he expects his career to continue to thrive while he’s locked up … noting, ” will have upcoming music that will be released while I am away.”