Hello Tahani hp hp.
if anyone said '' you can't do anything '' to you , you will say to him/her '' i can, please don't listen to them '' .
i guess this correction should be fine from what i understood in this discussion. ^^
If anyone says "you can't do anything" to you, please don't listen to him/ her. You should say "yes, I can" to him/ her.
I hope this helps.