A job in sales and marketing could prove daunting especially if you didn't go to school for it. To be able to perform a successful sales and marketing job one must need more than mastering the sales techniques. One needs to be motivated.
And more than the techniques a good salesperson must have genuine empathy for the target client; one who knows himself, his strengths and weaknesses and knowing the exact right timing of using the tools of the trade to help the client get what he needs. Mastery of the product sold is already a given requirement.
There are countless sales, account management and marketing training programs around. So many, one would not be able sometimes to distinguish one from the other. What worked for me was I knew how to build rapport with the prospective client. I understood the different quirk variations. And because my motive was pure I was there first to help. Too good to be true, but that was what really worked in my situation. Understanding the clients' motives was paramount. It was his agenda first before mine.
Half of the battle is won, when and if you have a clear picture of what the client wants... because by then you would have already won his confidence, earned his trust and then he is ready to listen to what you have to say.
Aside from focus, it always pays to think positive. Dismiss negative thoughts because such thoughts can almost always cloud judgements. Never say and think can't, don't, maybe, I will try. The thought process is there to master. If you need to repeat over and over the thought or verbal articulation that you want to visit a certain (5) number of prospects for the day, you have to early on, program your mind and instruct the brain that you will do 5 productive sales calls for the day. It is always a conscious effort to drill the mind of what it needs to accomplish. I think some may call this neuro linguistic programming techniques