Similarly, I am practicing and not sure that my practice is effective. I have looked at the "How to Practice" tutorials but there seems to be very little information about what to practice - those tutorials seem to focus more on the how, attitude, mindset, etc. A typical session for me looks like: 

• Tune the guitar


• Spider exercises with metronome


• Scales (major and pentatonic) with metronome


• Chord shapes. 20x each chord I know


• Guitar tricks videos or working on chord changes

Some days I only do 20 - 30 minutes and other days I stop myself after 90 minutes. I think what I need is someone to tell me I am on the right track or to tell me what I need to add / take away from my routine. For example, where does ear training fit in ?