I have trouble keeping an erection what is going on or what can I do to help my-self out?

I almost all day have erection

WHEN do you have trouble keeping an erection? During intercourse? During Masturbation? Throughout the day?

Let's start simple. How old are you and are you on any medications?

Well the person who has the erection all day has the much more seroius medical problem, since very long term erections are a health threat and should seek medical attention at once

As for as having trouble, how old are you, what type of medication are you on, are there stress at work, at home, a lot more info is needed