Get de la mesa's pep talk book (with it's 5 pages of study plan) and then follow his 7 circle thing to the letter.
Actually I think you can find the meat of it (those few pages) for free in .pdf form. Anyway you basically get a set amount of tactics (say 1000 problems) and in the end you'll have solved them each 7 times. The final day/final circle you do all at once and you have to solve tactics until "you sweat blood from your forehead" which if you're not willing to do, according to de la mesa your a wimp and should stop being such a cry baby or just go home now.
Anyway that's what you have to do, work hard = big pay off.
Let's say I wanted to become really really, I mean really, good at tactics. How should I approach the problem. Let's face it, the weakest link in most of our games is tactics.
Do lot's of tactics trainer? Like 1 hour per day?
Or work on some tactics workbook or similar? Or both?
Play tactical blitz games?
How would your training program look like?