There is never enough time in a day and once the day has gone, its gone! Don't forget "Prime Time" the time when prospects, clients and customers are most likely to be available and receptive. This will vary from industry to industry, market to market, job to job.
If you have a "sell / do" role lawyers, CPAs, consultants, sales engineers put time aside that is only for selling. Just because its the beginning of the month, don't fool yourself, watch out for the time bandits that steal your business development and sales time. You should NEVER be doing anything except pro-active sales activity in Prime Time.