If the manager or leader is an enthusiastic person but lacks confidence in his abilities, do you think he can succeed?

Enthusiastic person without Experience - Creative - Ability not at all

but if he have the three with enthusiastic when he get the position

he is only who can determine that  

Thanks

Thanks for invitation.

I do believe that,any successful manager or leader has to have self-confidence as a mandatory to be able to manage or lead his team, convincing them with the objectives required, the approved plan in order to achieve, plus motivating them, despite of he is enthusiastic person or not. 

Thank you for the invitation;

The manager or the leader can overcome the lack of confidence in his abilities if he possesses that enthusiasm that inevitably will give him the motivation and motivation to gradually gain that lost confidence in him.

Thanks

Lack of confidence means no  success