Managing time is not easy. I used to waste it a lot until I was 23. At this point, I realized time is precious only because of my boss.
I was doing quite well in my job since I had a great boss who was also my mentor. At the same time he motivated me to acquire additional skills which I ignored. Later, he got a better opportunity in Europe so he moved on. Now, I was alone and my new boss did not take much interest in my job activities. He actually wanted to fire me so that he could place his candidate at my position. He gave me a project that needs to be completed in a week's time.
The situation was difficult for me to handle as I did not have the expertise. This was the same expertise that my earlier boss wanted me to excel at.
Had I acquired those skills earlier, today I would not have to worry about it.
Continuous learning is the key @Arpita Raut Mind-blowing post.