Time is relative

I always feel "why are the remained times too short?" when I realize that my work plan was broken up. To check how I spend my time, I'v recorded my footprints at google calendar not only for planning scheduling but also just logging what I've done.

Interestingly, I identify that I merely prepared big task. Just got it away later future. And I frequently made some mistake estimating how big a task is. Eventually, I've encountered very much remained tasks just before the deadline. So, I felt that "time is too short!!". In fact, the fundamental reason why I felt like that is that I passed a calculating my affordable workload with candidate tasks wether I can do or not at given time to the future nearby deadline. If I did calculation of expected time as soon as possible even roughly, I would refuse some tasks in this turn at least.

Corrected version; I think "Why is time so short?" when I realise that my work plan doesn't work. To check how I spend my time I recorded my footprints on google calendar, not only for planning and scheduling, but to log what I do.

Interestingly, I found that I only prapared a big task, and then waited until later to actually do it. I also found that I often made the mistake of under estimating how big the task really was.  Eventually I saw that a lot of work remained just before the deadline. This is why I feel that time is too short! ...

I don't really understand the rest, but I think what I have written is more or less correct.