Find out what inspires you and soak yourself in that. For me, going to concerts to see great players or bands inspires me to practice more. Listening to great singers inspired me to refine my vibrato and phrasing. Listening and studying the music of great classical composers inspired me to study music composition.
I have written an article on this exact topic titled: Choosing a Teacher. I can’t stress enough how important it is to find the teacher that is right for you! Your teacher (or Lessons DVD) should always be Goal Orientated. If its not look for another teacher or school to study with! You don’t need a teacher to simply give you information or things to practice - you can get those things anywhere, what you need is a teacher who knows what your goals are, Cares about helping you reach your goals, and knows how to help you reach your goals.
These are questions you should ask yourself. The two biggest practicing mistakes I have seen in students (besides not practicing enough) are: 1. Practicing is not goal orientated. 2. Not understanding the difference between playing one’s guitar and practicing one’s guitar. If you are having any difficulties with practicing, talk to your teacher about it. He/she should be able to help you.
You should be able to play all the techniques of the guitar. Van Halen did tapping but not with all his fingers as others have done. He didn’t play finger style much either, but we still regard him as an important guitarist, the same thing can be said for Vai and many others. Classical guitar master John William’s probably doesn’t play well with a guitar pick (I am assuming this to be true, I have no proof of it), but he is considered one of the greatest classical guitarists alive today.
Skills like improvisation, songwriting and playing with a guitar pick or not going to be high on his list of skills to acquire. This is because classical guitarists generally don’t do those things - and don’t need to to be great at what they do. These players are great players in their own ways and they have spent many years developing their skills. Learning everything about guitar playing would have taken away precious practice time from the things they needed to focus on to reach their goals.
Absolutely spend a good amount of time in practicing reversing that habit. Practice in a new way, where you make sure you do what you weren’t doing before. Analyze the essence of that bad habit, extract it from it’s musical context, and perhaps make up “auxillary exercises” based on the essence of it. Use all the practice techniques that I teach to effectively begin this process of reversal.
There are many other things you could do, with just a small amount of time - use your imagination. Of course, keeping your guitar at the ready is essential. If you only have a few minutes, you don’t want to have to get it out of a case and tune it.
Now I know I have to work on something very fundamental. I have to work on the behavior of my third finger, and change the way it reacts to it’s neighbor being used, the second finger. If I can get down to the matter with that degree of specificity, that degree of clarity and focus, I am in a position to cause major Vertical Growth. If I can change the way that finger is behaving in that situation, I will see many playing problems I am having in other pieces of music begin to “melt”, and eventually disappear.