Frequently.
I have anxiety (diagnosed), so that can directly or indirectly make it hard to fall asleep even with the tablets. Once I am asleep, I'm fine. I slept 9 hours just today (though I fell asleep at 8 am). There's only one thing that seems to work almost always. The only problem is that, at the moment, it's illegal in my country so it's not viable for purchase often, but that's turning around in my state in a year or so.[footnote]I'm sure you can guess what substance it is. Just don't want to mention it by name. [/footnote]
I've tried taking herbal sleep supplements despite being a skeptic and disbelieving them. They seem to help, but could just be a placebo. I've had sleeping tablets (5mg melatonin) and they seem to have a 50/50 effectiveness.
Combined with the fact I'm unemployed and finding it so hard to save (bills, unexpected expenses, having to buy that annoying food for sustainability), I feel like I'm heading down the road to depression too. I'm hopefully going to get a job soon (have 2 very promising applications, waiting until tomorrow to hear back, then following up) and, since I still live with my parents, I don't have too many responsibilities, so everything's OK there. Just need to fix this sleep.