Set goals for your revenue, this was the most important thing that I learned.
Know your closing sales percentage.
Know how many clients you need to talk to each day/month/year to effectively meet your needs. For instance if you need to train 10 clients per month (just a random number) and you have a closing rate of 15%, then you know that you need to talk to 66 people per month to make you sales. Break this down to 4 weeks and you get, 17 people per week. Break it down even further to 4 people per day. Working managable numbers like this makes this job less frustrating and less overwhelming in the long run. It is way easier to see yourself talking to 4 people per day than 66 people. Yet this kind of breakdown helps to ensure that you meet your personal goals for income. There is a math behind sales and it is very beneficial to know it.