That is probably why you are now a fish "magnet!" It took me awhile to learn this too, even though I had read about it, I wasn't really putting it in to practice. Now I lob upstream with a reach cast, then immediately roll cast just up to the indicator. Tullis talks about this, but I really learned it the first June day I watched Aaron fish.
The next critical element after the reach and the mend, is too throw some big S-curves in your line by wiggling more line out of the tip. This will completely eliminate drag and extend your drift for many, many feet.
The best way to learn all these techniques is via Aaron's nymphing class. A book is no substitute for a good teacher.
Tight (nymphing) lines!