Huge guilt! PLZ HELP! MEMORY ERASURE possible through hypno?

I have committed a mistake more that 15 months ago..it didnt hurt anybody but was not according to my moral standards..since then it comes up everytime i try to move on from it..i just cant do anything now..it pulls me back from almost every good thing even when i try i fall back in even more guilt..i have lost my job.. my friends.. i cant study..i just stay in my room..not sleeping..probably for days..crying for most of my time each day..now for months..i just want to end this pain..every now and then i think of commiting suicide..the only other way that i think could help me is completely erasing that memory from my brain..that one single incident..every time i start doing something good i start thinking about that mistake and then it gets ruined. i used to be a topper with a really good job. Now i have lost everything..just a looser sitting in the corner of a room..crying all day everyday..can anyone help me erase that incident from my brain? is it even possible to erase that memory? i seriously need help..i want to be saved..i dont want to die like this..please i beg you! i have been suffering for a very long time and the only way i think of getting relief is suicide.. is there anybody who can erase that memory from my brain???? please? i dont want any other kind of help..just tell me if amnesia or memory erasure is possible or not and if it is..can anyone help me with it?