I make words out of the pieces, like "BL" would be "blind" or something like that. I use j, l, and t perms.
Well then of-course you find it hard:
1) Because every edge target needs 2 letters, you have to memorize 2 times more info then you actually have to.
2) Since there are only 22 different edge targets, you only ever use 22 different words on your solves, which after a while makes them pretty much meaningless.
Instead of naming the UB piece UB, name it A, UR would then be B, we keep going clockwise and get UF = C, UL = D, now we go to the L face, LU is E, LF is F and so on to the F face, R face, B face and then D face. This is called a lettering scheme, this one is called the speffz lettering scheme, look it up on the wiki.
At first you might think it's pretty hard to get used to one and for every edge you'll go, for example FL "A, B, C, D, E, F, G, H, I, J, K, oh it's L!" but try practicing it a little and you'll see how easy it becomes and you'll be able to say the letter without going to the start.
After a lot of practice you'll be able to know the letters of an edge just by looking at its colors.
Now when you have a lettering scheme, if you want to memo the edges UL and then DR, instead of thinking about the ULtimate DoctoR which is a lot of info for just two edges, all you'll need is just DV which could be a DiVa or DiVe or DoVe or DaVe or whatever. One words equals two edges. If after UL and DR comes FL and RF you'll have DV-LP which could be a DoVe LooP or DaVe's LaP. These two words interacting can form an image in your head. A single image is all you have to remember and by remembering that image you actually remember
4 edges.
Another plus is that there are much more possible combinations of letters, instead of just using RLUDBF, you get to use the whole ABC which means there are much more words, you don't get the same words over and over again and images are always new and special: easier to remember.
Try watching this:
https://www.youtube.com/watch?v=3JNpJaRccRE it might also help you understand the idea though it's a little bit more advanced and for people who already got a few successes.