sleeping prob

I used to have no problem with sleeping when I was younger. And those best sleep aids were non sense to me, because I'm the type of person who can sleep just about anywhere at anytime! But I realized that as we age, getting myself to sleep has been one of my issues. Maybe because I tend to
work till the wee hours of the night and my body is not used to sleeping at an early time of the time. so now, I'm not sure if my case is considered as mild insomniac or I just need a little help from sleeping aid to get me to slumber.