How to mold my mentality to be more like thors

Hey so I'm not sure if this is the right subreddit for this but my life is kinda shit right now and everything I do to try ro make it better just makes it feel even worse. I want to workout more but I just don't have the drive anymore and I've lost a passion and a interest in life. I'm dealing with a breakup and it's the worst I've ever felt. As the title says I want to be more like thors and therein in terms of ideology. The phrase "you have no enemies" always sounded so beautiful to me because there is literally no reason to keep hate flowing and to ruin your life over someone who's wronged you, at least that's hoe I'm interpreting it ( I got drunk last night and my head is pounding). Other manga characters whose mentality is captivating to me are guts, baki, jaggaan and rock lee. Those are all the ones I renember off the top of my head. Sorry for writing so uch I just want to get my message across. So to anyone reading this have you ever been able to achieve mindsets like these or are these just impossible tasks for a person in their 20s. Also if there's any workouts or tips that can help I will really appreciate it. I hope everyone who reads this has an amazing day.