Three Months in - Field Technician

I am an field tech. walker in which I replace damaged parts for consumers (business and residential). It is three months into this role and IMO I rate myself of 5 out of 10. So far, the remote manager only gives calls to the top tech and for the one who are either new or not up to par yet, doesn't get calls for the day. Also, not only my work is suffering, I feel that I rub off my co-workers, most likely my office manager, who does the same work I, do due to my aggressive personality and the way I carry myself. In what ways can I improve before moving on to my next gig? Thanks in advance.
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I added one, thanks for pointing that out.
Do you get paid if you don't go on any calls?
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Make sense, thing is I have shadowed before and the veteran techs. work quickly while I'm still working on my speed; My manager stated on the conference call, that there will be days were he has no choice but to not give calls to few people due to low call volume.
I stay at the office studying on my CCNA but lately I head home afterward; I get paid one hour for being at the office.
sounds like it may be time to look for a new job? with all that free time might as well.