If you use rhyme, it should flow to sound good. You are doing a good job telling a story but lets make it a little more lyrical. Please note this is an example and I am not trying to change your poem. You should write it in your own words.
I humble myself as a man
Throughout my life's journey
I had to understand.
that life doesn't give any breaks
I had many adversities
and learned from my mistakes.
The flow is important in the lyrics. If there is a rhyme it has to flow otherwise it is hard to read.
Write it read it. Rewrite and read it again. How does it sound? If it sounds good and it is nice to read then people will like to read it also.
I hope this helps.