Alright guys, stop scaring the poor boy, medically we dont define tachycardia until you are >100BPM resting pulse.
Every person is hard wired really with a different resting pulse rate. Exercise, or lack thereof can change that. I've seen young fit patients while pulses in the 90-100s. It just depends on the person.
However, OP considering your diet and social habits you need to lower the drinking down to only once or twice a week and NOT binge those days. Having a couple beers once or twice a week can actually be good for you. Obviously you need to kick the smoking habit, which might be contributing to your higher pulse rate. And get better dietary habits!!!
And finally, EXERCISE!!!!!!!!
<--- soon to be nurse, works at a trauma hospital.