Keep in mind that we are all individuals. So if you are not an athlete, or able to concentrate or focus very well, do not get discouraged. Everyone has strengths and weaknesses, we are not Gods yet. Be patient and learn as much as you can, be kind to your soul and make it beautiful.
The first aspect of the soul I am going to go over is the physical self. The physical body is required to empower the soul. Our bodies run off of electrical impulses, or Bio-Electricity. The amount of bio-electricity that one has is dependent on the individual. We all start in different places, but the amount of bio-electricity that one can handle is mainly dependent on how strong your body is. If you are lazy and do not exercise then you will not be able to handle as much. This is why it is important to empower the physical body, and not just focus on the mental or spiritual aspects. Yoga is one of the greatest methods for strengthening and preparing the body for the transformations that you will go through. Just remember to not push yourself too hard on things and to take your time. It is better to start small and build up to a master over time, instead of trying to do too much and not being able to keep going.
The second aspect is the Mental aspect. This would be your mind or brain, how you would train this aspect would be to do something that requires focus and learning. Lumosity or brain games are a excellent way to strengthen your brain and have fun at the same time. Remember to not limit your self on creative ways to train your soul. You could also read a book or solve math equations, even putting together a puzzle.
The third aspect is the spiritual aspect. This would cover meditation and working on the soul itself. The main focus should be on the chakras, the chakras are one of the first things that need your attention. One cannot advance without opening and empowering your chakras. Depending on your individual soul, it may not take long or it could take quite a bit of time. Consistency is the key, and to not try to do too much at once. Trying to master everything in a day will get nowhere. Never underestimate the power your soul has locked away. Another practice that is important, is the mastery of Void and being able to go into a trance at will. The reason void is of dire importance is because when you start to open yourself, you will experience a wide range of effects. They are different for everyone, but could be strange thoughts, images, sounds and so on. But if you practice void these things can be pushed away and not so intense.