is it a good habit to put things off till the next day?

It is definitely a very bad habit to put things off till the next day.
there is a phenomenon that a lot of young people nowadays would love to procrastinate things over and over until the last minutes.
When people are dealing with work right before the deadline, they tend to be rushing into the job and just finish it without a second consideration. In this case, usually those job accomplished right by the deadline will be less qualified.
From the other hand, you never know what will pop up the next day. For instance, if you are an agent and you suppose to give an quotation to your clients tonight, and you feel too tired to do it. When it comes to the next day, you might get another lots of jobs to do, plus those haven't been finished last night. You cannot handled it again. Over and over, you will never finish your job!