You need enough motivation. That makes you interested in achieving something, even little, artistic endeavour. Interest makes you acutely sensitive to all kinds of shades and major features that are essential to the art. Without such good tuned attention you will do at most mediocre things, but with the keen attention and interest in the subject you will achieve much further than with just your skills.
If you have lost such interest, you should take a "holiday" and do other things that interest you more, do them wholeheartedly. That brings intensity to your life and actions. Maybe arts will have much less time in your life, but you will do better in quality.
Like a lack of interest, a too scheduled, for examply habitual or almost "official", attitude to practising arts can make you unadaptive and so kind of out of touch. You need to regain the possibility to tune yourself to each endeavour, to each interesting subject and goal in life. That is achieved by letting your interests each fraction of a second determine whether you will concentrate to arts right them or to something else. If you feel like dozing, that is not the same as being in the right mode for arts. You need some part of you to be alive and in touch with the interest in the things that are most meaningful to you in arts. For example if you do varied kinds of things that happen to interest you and that bring variation and content to your life, you can then by the side collect impressions, ideas, feelings etc. that can be your guide to what it is that interests you in arts, what are the things that you want to develop in. Let your feelings guide you further in skill and quality.