A key thing is to keep your coffeemaker clean - a lot of people don't even rinse the carafe or basket before brewing more coffee the next day, they just throw out grinds, put new ones in, fill the reserve with water and that's it. Because I don't make coffee much these days,
that mistake happened to me (well, it took 3 weeks).
I find that personally it just causes me to sleep more the next morning if I don't force myself awake to get my "fix" (such as lazy Saturday mornings), and I also found that it just aggravated my anxiety conditions more than I needed them to be; if I have coffee and then experience something that would just normally annoy me, I get super pissed off; if I experience something that would normally just make me nervous, I freak out/panic, and so on/so forth. Granted, if I'm going be having a fun time later, it makes that more exciting too - when me and my friends were going to see the Scott Pilgrim movie, I intentionally drank more coffee beforehand to get more hyped up about it.
If you're drinking coffee for the caffeine remember that espresso has less than lighter roasts. All the caffeine you're going to get is in the raw bean. The longer you roast it, the more is destroyed.
I'm partial to "white coffee", roasted to the yellow stage. Once you've had it you'll realize that every cup you've had is burnt and bitter. It has a nutty flavor, a lot like barley tea.
That concept makes me think of
Coffee Fool, which, while ridden with obvious sales tactics, has also received some credit amongst customers. Nonetheless, it did make me curious as to what kinds of coffees were out there that didn't require cream or sugar; even from my local coffee house, I still add half-and-half and a little bit of Sugar in the Raw. I don't need my coffee to taste "sweet", the point of the sugar is just to nullify any bitterness or bad taste.