Suggest Treatment For ADD

I have been suffering for what I believe is ADD, its getting worse and now its paired with fatigue. Its affecting me in every aspect of my life. I have two small children and I've missed doctors appointments because I've just forgotten, I'm not doing well at work because I cannot stay focused on anything for more than 5 minutes. I find myself feeling hopeless because it's impossible to explain to people that i can't help it, everyone thinks I'm simply irresponsible. I set alarms and leave notes everywhere but I see them and immediately get distracted by other things and the reminders become useless. Its getting to be very stressful.