I have had insomnia for 2 years now associated with depression.   Have had zero sleep for the past 5 months.

I see no way out of my insomnia as I cannot remain active and busy enough during the day to get tired at night so I am caught in a vicious cycle.

How do others who have chronic insomnia cope during the day?

Unfortuneately for you it is pretty much impossible for any of us to help when a post includes no details and is exaggerated to the point of ambiguouity and irritating to those who want to help.  I personally am better at giving suggestions to those who can construct a coherent post with adjectives describing the actual problem, not elevate the the issue to unrealistic extremes ("no sleep in two years" and "zero sleep in 5 months").  If you can come up with some examples based in reality, I would be happy to help, give you suggestions and share my experiences.  As the post is now I have no idea where to start because there is nothing about your sleep patterns or activities.

Flesh. 

insomnia and depression have been happening to me in the last few years.

I guess it's all because of the changes of life or family issues.

you are not alone.

I have had insomnia most of my adult life.I'm 52 yrs old. Have you tried a 1/2 Ambien?

I don't think I've ever gone this long with no sleep at all.but this is very acute problem i guess

It must feel terribel to be caught in such a vicious cycle.

One of the best solutions for your overall problem is to engage in a program of physical activity. Physical exertion is key for helping to regulate the sleep mechanism, and is also a great support in dealing with depression. When we increase our exercise levels we release natural endorphins which are the "feel good" hormones in our body, and these naturally help lift us out of our blues. Making yourself get some activity everyday will make a HUGE difference andhelp make you tired too.

If you have any physical ailments then you should obviously check with your doctor before beginning on a course of exercise. But there are many things almost anyone can do, just starting with walking.

Exposing yourself to daylight and natural sunshine is another very important part in regulating your sleep patterns. You need to spend a good amount of time outdoors in the sunlight, and then when you go to bed, it should be as black as possible. If you must have a nightlight, ti shold be as dim as possible. Do not turn on the light at night for any reason, or watch tv or open the refrigerator door. Uour pineal gland excretes the hormone melatonin, which regulates sleep, at night but only IN THE DARK. If you can keep to this pattern for a few weeks you will see a big change. When you get up in the morning, go outdoors and feel the sunshine, tell yourself this is the time to be awake. Do some walking and soak up the natural light. Go outside again at lucn and agian in the afternoon. The put yourself into bed at a reasonable time, say 10 or the latest 11pm. Stay in bed in the dark all night, getting up only for the toilet. Give your body a chance to feel that rhythm. It will help enormously.

Also, never read in bed or hang out in bed (or anywhere in your bedroom). The bedroom is for sleeping, but if it's the place you sit and watch tv, read books, etc then you have lost that association. Do those things in the living room, and use your nicely darkened bedroom for sleeping only. Consider having a clean out of your bedroom as well to make it more appealing. If you can afford it, treat yourself to some new sheets or pillows and make your bed an inviting place that you feel good about. Taking positive action like this will also help with depression.

You can help yourself out of this situation if you are willing to take the postive steps I've outlined. Good luck!