In case you suffer from insomnia quite often and you feel that your environment or even the room is the causative factor behind it, then you know that the cures for insomnia in this case involve looking at what the sights or sounds are which are 
keeping you awake at night. In case you live near a busy highway, the cures for insomnia may include buying some ear plugs to sleep with, so that you do not become riveted on its sounds. The same cures for insomnia will be applicable in case you live near a forest where you constantly keep on becoming distracted by animal sounds. Ensure that you do not get ear plugs which cut out all sound altogether. Rather, opt for those which have a muffling effect as they would cut back the sound by about 30dB. A white noise machine or even a fan which produces a continuous background noise may be good cures for insomnia. This is because this type of noise is easily to sleep through. In case you are too hot or cold, you need to get up in order to get more sheets or a fan. A common mistake which people tend to make is to stay in bed shivering or sweating, as they keep on waiting for sleep. If you simply get up once in order to make yourself comfortable, you will feel much better off and will be able to fall back to sleep. In case your room seems too bright, the cures for insomnia in this case would include getting a darker curtain. If you feel that your mattress or bed is uncomfortable, you need to get yourself a new one. The gains from all this will be immediate as well as tangible.
In case you have the chronic type of insomnia in which you fear that a chemical imbalance may be the cause, it is time to ask a professional for help.