Why can't I convince myself that it is important for me to sleep?

The easiest way to convince yourself is simply to try. Rest your head down upon a soft pillow in a quiet, dark space, and concentrate on a single thought. Let everything else melt away as you preoccupy yourself with one thought. Then, slowly, let it go, and drift into sleep.

It's important, because sleep energizes and renews your body for a new start of the day. It makes you feel great both -menatally and physically!

Maybe because you haven't experienced it's benefits. It's often hard to agree with something that everyone says is good, if we haven't seen it's good sides first hand. Try to make an experiment, and sleep 8 full hours for five days. The way you feel afterwards may just be enough to convince you that sleep is just as important as food and air!

I had experienced working late at night for my whole life. One day, I find out that I got serious illness caused from misbehaviour. Then I start asking myself why I didn't take care of myself as such. The best answer is I give to myself is "I've poor time management." Never thinking about the time prioritisation in my life -- 1) A time to take care of myself 2) A time to give to my family life 3) A time to earn a living and 4) A time for self-development." Once I considered about this matter,surprisingly, I give most of my time to earn a living and ignore the others aspect. I miss so many good things in my life. Thus, I change my habit. I take care of my self first. When I can manage my personal life more effectively, I have more time to take care of my family. When I have a good system to manage my life and family, I become healthier and happier which have positive effect upon my jobs and I start interesting how to develop myself for the better.

this is probably because you've been in a routine for too long in sleeping late or not getting enough sleep

Probably because you already do not think that sleep is important, but i CANNOT begin to stress how important it really is.

This one requires some self-reflection. I would ask yourself why you think is necessary. How does sleep make you feel afterwards? When you don't sleep how does that feel? Those are just the starting points to answer this particular question.

You may be dealing with anxiety or depression. Those mental illnesses can mess with your mind and prevent you from doing a vital activity such as sleeping. Or perhaps you have a lot going on, or important decisions to make. And this means your brain may have a hard time relaxing when it comes time to sleep.

Sleep is one of those things we think we can do without, until it's too late. Sleep is very important and it effects our mood, our happiness, our health, amongst other things. Never slack on getting adequate rest!

It may help to familiarize yourself with the benefits of sleep. You can do this by reading about the topic, and asking others. While your body is asleep, there is a lot of repair and rejuvenation that goes on, such as in your cells. People who get enough sleep are more healthy and alert as well.