I'd like to add my voice to those saying that you shouldn't get emotional about eBay auctions or attached to any given item. That's a losing strategy -- you'll either get frustrated when you're outbid or you'll end up overpaying and suffer buyer's remorse. Remember that, with the exception of very rare items, something similar
will crop up again on eBay, even if it's not listed there right now. If you really need it right now, eBay isn't the way to buy it (with the possible exception of "Buy It Now" items).
I find that the best way to approach an eBay auction is to decide, before you place a bid, what your maximum bid is -- the amount over which you will not pay, period. Then bid that amount. If you win the auction, chances are you won't pay your high bid amount. The way eBay works, even if you enter a bid of $10,000,000, you could end up paying just $1; the final auction price is determined by the
second-highest bidder, with a few caveats about very close auctions. (And I'll add that I don't recommend anybody actually enter a bid of $10,000,000; if another lunatic does the same thing, or even just enters a very high but still rational bid, trouble will ensue!)
The trouble with entering your maximum bid to begin with is that people who don't follow my advice can poke and prod and slowly drive the price up with multiple bids, then drop out once they realize they've already gone well beyond their own rational limit. The solution to this problem is to snipe -- that is, to wait until the last moment and enter your bid then. Many people get angry at the mere mention of sniping, but I don't see a problem with it. Rather than enumerate all my reasoning, I'll refer you to
this site, which lays out my view pretty well, although I'm unaffiliated with the site. FWIW, I use
JBidWatcher, which is Java-based sniping software. It works pretty well and runs on a variety of OSes.
I find that I get much less frustrated with eBay when I just enter a bid and forget it. Sniping helps avoid problems with the "creeping irrational bids," but there's a small risk of the sniping software failing, so sometimes I don't use it.