Ola's will it chug and interview segments have become a weekly staple. He did an interview with Kiko Loureiro of Megadeath recently where they start talking about fundamentals practice about 20 minutes in. I haven't kept up with Megadeath so I'd never heard of him before but I liked the interview. I've been doing something similar through a lesson plan that does a 7 day cycle of alternate picking, string skipping, string bending, arpeggios, sweep picking, legato and rhythm with increasing difficulty for 365 days. 20-30 minutes in the morning and 15-20 minutes before bed. If I have more time I'll practice songs, theory or recording but that's hard to do every day. But I usually get at least an hour in every day since I laid out a plan.