‘I’m’ is a contraction for the words ‘I am.’ The phrase ‘working on’ relays a physical or mental effort towards an accomplishment.
Here are some examples:
“I’m working on a big project.”
“I’m working on training my dog.”
“I’m working on making new friends.”
“I’m working on educating myself.”
“I’m working on my homework.”
“I am working on painting a house.”
“I am working on a new idea.”
“I am working on my computer.”
“I’m working on my website.“