Ok.. now lets get practical.. I would suggest you to involve yourselves with some work.. If you don't know what exactly to do, then contact me I will give you some home based work.. Try to get some pets.. They will keep your mind occupied and happy. There is book called "Hayat us sahabah", try to get that book and read the stories of sahaba.. it gives lot of pleasure to know the help Allah has bestowed upon them.. There is nothing to feel guilty.. You should know your potential... You should have confidence in yourself. Allah is with every Muslim though you may be a sinner, but still we should have faith that Allah will save us as He promised.