I've been a bicycle mechanic in London for the past 5 years, 3 years at a big corporate chain and the past 2 years at an independent.

Something that's become apparent during my time at my current place of work is that I am slow as **** at servicing. I can bash out small jobs no problem, but services that are supposed to take 90-120 minutes sometimes take me as long as 4 hours.

It's usually the bikes that are beaten to hell, rusty as ****, or high-end carbon nightmares. It's not a particular part of the bikes that I find myself getting stuck on, it's the overall process of getting longer services done as efficiently as possible that I can't seem to wrap my head around.

My manager is getting increasingly pissed off with me and it makes me feel like a moron. I have ADHD and I really struggle to get a clear mental checklist of everything I should be doing. I often find myself just going through the motions while my mind is elsewhere. It's something I've struggled with as far back as I can remember, my mind just wanders whilst I'm working and before you know it, I've turned a 2 hour job into one that takes me all day.

I'm getting increasingly frustrated with myself and I'm starting to worry that if I can't figure this out I might have to leave the trade. I can't see myself doing anything else and I'd be miserable if I had to quit because I couldn't bring myself to meet service time expectations.

Does anyone have any advice? I'm not sure what to do :/