Mine always rhyme?

I cannot write a ditty
Without making it rhyme
I don’t know how its done
Mine matches the ends every time

You see It gives me a challenge
I enjoy a little test
& When I’m sat thinking out poems
Well its me enjoying a rest

I don’t think I would be able
To make rhymeless verse
But one day I will try 
I will practise hard & rehearse

Its like the way that I talk
They say It sounds like I’m singing
My sound goes high & low
Similar to church bells ringing

Well It must be good to be different
But I can’t change what I am 
I got all of my traits
From my genes from Dad & Mam