How long does it take when you quit smoking to stop being irritable and bad tempered?

I smoke on and off… might go a few days without one, might have 5 in one day, might have 2 the next day…then none for a week… and I’m quite bad tempered… I didn’t think this was due to the cigs because i smoke so few really…but could it…

Every time i have a cigarette am i setting myself up for irritability (in terms of withdrawal) regardless of how many and how often i smoke…?