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. ^^

Hi Tahani.

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.