U CENTRE

Time is irreversible. Once gone, it is gone forever. You can utilise time to make money, make relationships, make carrier growth, make whatever are necessities. One major concern is that if some one or some people are not giving value to your time, don't get demotivated or don't feel underestimated. It is your time and you can take call to use it wherever you find better opportunities to develope. 

Stop complaining about why you couldn't do. Rather, start planning for how can you do now.  Of course, it is important to learn from your mistakes. But never mourn over the past.  There are n numbers of possibilities waiting for you. Just keep on trying. Nothing can stop you other than your own will.