How to prevent sleepless night?!?

I think I am in a mess.... emotionally unstable.... physically fatigue.... mentally drained....

How to keep brain busy 24/7???
How to prevent sleepless night???
How to lock down certain part of your memory???
How to maintain a smile on your face even though your heart is in pain???
How to maintain a promise when you feel like breaking all the rules ever written???
How to keep going when you feel like you have already lost the race???
How to be strong when you feel like breaking down in tears???

怎麼了 你累了 說好的 幸福呢
我懂了 不說了 愛淡了 夢遠了
開心與不開心依稀數著你在不舍
那些愛過的感覺都太深刻
我都還記得

你不懂了 說好的 幸福呢
我錯了 淚干了 放手了 后悔了
隻是回憶的音樂盒還旋轉著
要怎麼停呢

周杰倫 - 失落非主流