[header] How to stop spending all night on the computer [title] Determine in advance how much time you want to spend on the internet. [title] Set a timer if the time you will be on is shorter than an hour or so (most timers have a maximum of 1 1/2 to 2 hours). [step] This works well if you have errands to run or chores to do around the house. 
[title] Set an alarm clock if you need to be off at a specific time. [step] For example, if supper has to be made at 5:00 and it is 2:30, set the alarm.