I hate giving recommendations
Tastes vary greatly, so I don't like selling people on a series based on my likes when they don't align with theirs.
I'll just say Ippo is one of the most inspirational series you could ever read. Boxing is the setting, but overcoming life obstacles is the theme. Great comedy, heartfelt moments, cast, and badass fights.
Also it has an amazing anime adaptation. It takes the manga's emotional and epic moments to a whole new level. I recommend giving the first season a shot and seeing if you like it. If you're hooked, we'll give you the blueprint on how to switch over to the manga