How much time to give boyfriend who's still growing up?

Dear Lori and Jeff,

I’ve been dating a really nice guy for a couple of years but I think it may be time for me to move on. When we first met, he was unemployed and smoked a lot of pot, not usually my “type” but he was really fun to hang out with and has an infectious personality. He said he had plans to make big changes in his life and has had some promising opportunities but continuously puts things off or sabotages them, saying it wasn’t the right thing or the right time. He still relies on his parents for money and spends most of his time at my place because his place is a mess. The bottom line is that he’s not taking care of himself or contributing to the growth of our relationship but I can’t seem to break things off.

Signed, Should I Move On?