It is always a great idea to get in your best mood when you are about to call your leads. Get excited by doing some daily rituals. It is said that people judge you by the sound of your voice in the first 2-3 seconds and will automatically make a decision in those seconds whether they like you or not. If they have made a decision that you sound boring, and plain out dead nothing will make them change their mind to join you. They want someone who is excited, great posture and trustworthy.
What I do for 5-10 minutes before calling leads is I watch funny youtube videos. (Specially funny dog videos)

or I put really loud music and start dancing like if I was a rock star signing in front of thousands of people, it gets me in a really happy mood.
When I do this I have better conversations with prospects and when I make mistakes I usually laugh it off and most of the time they laugh with me. It is always great having some kind of bond with your leads like laughing besides asking them questions.
So here goes a question for you, what do you do before calling leads or what is something you can begin doing to get yourself in the best mood?
Try this it sure helped me
Cheers,
Erika Samperio Solares