fast nail growth tips please

hi everyone :) so im a terrible nail biter (i know i shouldnt) but i bite them that much i make them sore im also terrible for biting my cuticles and skin around my nails. i have had nail extensions and false nails which i never bite but as soon as they are off im back to biting my own nails!! i have tried the nasty tasting stuff which doesnt work for me, but what i would like to know is if anyone has any tip for not only growing my nails fast but also to make them stronger? i can grow my nails but they are very weak and i end up bending them with my teeth and then they break. if i can grow them long and strong i know i wont bite them. any advice is appreciated thanks :)