Rapper T.I. claims he's becoming a better man during his stint in prison -- telling fans, "The longer I sit, the smarter I get."
T.I. just penned a new letter to his fans (which a member of his team posted on his website) explaining, "It does'nt [sic] matter how long it'll be before the next time you see me. What matters is that I'll be a better man before that time comes."
He also reveals that he's been trying to understand God's "plan" for him -- saying, "How do you tell God Almighty that all you wanna do is LIVE LIFE ??? What if all you wanna do is be a father to your kids, a husband to your wife, and son to your mother."
As we previously reported, T.I. is serving an 11 month sentence in an Arkansas prison stemming from a 2009 gun conviction.