Dear Friend Mohit,
I too know that it is hard to plan your day today activities but if you plan them well, you can be successful in life.
Time management does not only mean preparing a schedule it does means that we should not waste our time and use them in a effective manner too.
You said that one of your friend is working as a CA in a company and he cannot manage time, If he has no ability to manage time he would be going to company only after taking some good rest say around 12 in the noon and he cannot say that he worked for 10 hours the previous day from morning 11 to evening 9 PM. he has to reach the work area in the stipulated period of time no matter what the problem is otherwise there would be a loss of pay charged on him.
Time management is done to utilize the time properly without wasting any time.
I assume as a CA he should reach the office at time, he has to plan his schedule and maintain all the records of books of accounts.
for your points specified I would like to make some corrections,
1. what is the use of making a target for one week when you are not able to achieve the daily target(total target divided by number of working days in a week), make targets daily and plan how to achieve them.
2. You should do the jobs assigned to you, no matter in the office or outside. So if you are incomplete in your task don't postpone it to next day. accumulation of more and more work is not good for the company their may be a sudden IT raid and you should be ready to show your books in case of CA.
"The greatest achievement comes from the biggest challenges"