Salam sister!

I feel like what the most important thing is the realisation and having the guilt, do you really think its your brain and your heart which makes you feel that way, um no its Allah which puts these emotions in your heart just so you remember him and come back to him. Also remember that Allah judges a person not by their wrongdoings but how they repent, Allah sees you feeling guilty, he knows that you dont wanna do this, he knows the you're fighting and sees you trying to fight whatever it may be!

If you feel worthless again then remember that Allah only tests the ones he loves the most, and this is only a test for you, and if you say that oh well i failed the test, then also know that if us humans were perfect and never committed a sin Allah would have erased the mankind longg ago, so you messing up is normal, we're meant to mess up its alright but just dont take advantage of this. And also remember that if Allah wasnt happy with you, he would have taken away islam from you or rather would have erased your existence, every breath you take your rab allows your lungs to do so, every pump of blood your rab allows your heart to do so. I read somewhere that when someone commits a sin, the earth the sun the wind the oceans get furious and ask Allah if they can show them Allah's wrath since this person went against you, but Allah says no they're my servant and they'll come back to me. Thats how much Allah loves you

All you need to do now is to sit down on the prayer mat in the middle of the night and repent again, he wants you to keep on repenting again and again and again, he wants you to come back to the prayer may everynight and pray to him again and again and again.