Hi Coconut,
It sounds like you decided to leave well enough alone. But if you ever decide to give it a try again here are some tips---tried and true.
1) There are some wonderful herbal calming formulas you can find online or at a good petstore. I use one called Pet-EZE Plus that works well (I make no commissions recommending it). These products just take the edge off for your pet.
2) Having some of the cat's favorite treats close by (I use pieces of boiled chicken) for making it a reward for enduring the insult of nail trimming. 
3) I have done several practice runs: Put kitty on lap, give treat (very small pieces): massage kitty toes, give treat etc for about 5 min (or however much she will take). Sometimes you even have to build up to 5 mins.
4) On a fussy cat do NOT have the goal of doing all nails at one sitting. You might only get 1-2 per paw at each setting. It may take you a week to get them all. 
5) One old trick is to wrap the cat, SNUGLY, in a large towel (like a burrito) just leaving out one paw. It takes a bit to get this method down but at least you don't have all those little razor blades slashing at the same time. Some cats even like being swaddled in this way.
If done regularly, kitty gets the idea that this isn't so bad an exercise.
As I always say: In training a pet it's more about training the owner!