If I were to make a guess, I would say that this post will get about 7 reads, whereas my posts about asana are read by dozens. There are a number of reasons why this is so. Namely the current craze of yoga as a workout and a purely physical activity to enhance the sculpt of your abs. We as Americans are constantly trying to better ourselves not through reflection or introspection, but rather by weighing less and looking more beautiful on the outside.
I think it stinks a little, but also it's very much cultural. With the constant distraction of smartphones, money, bigger and better "stuff" it's no wonder that we aren't particularly capable of "going in" and doing internal work. Why is that? Because it's hard.
It's a heck of a lot harder to sit down and watch your breath than it is to go to a yoga class with rockin music where you are constantly moving and doing. In other words, modern yoga is commonly just another distraction for our already "monkey" minds.
The process of going inward is outlined in the last 4 limbs of the 8-limbed yogic path. The first of those limbs is pratyahara which is the "turning-inward" of the senses. It's essentially the process of quieting the mind by turning off your awareness of that which is outside of you and moving toward awareness of what is happening on the inside. From here, your work moves into concentration meditation (dharana), meditation without a point of focus (dhyana), and finally samadhi which is full absorption into your current task at hand.
So, what to do?
The work of coming regularly to your meditation cushion to quiet the senses takes a mature and sophisticated student. This person has to be willing to sit still, be quiet and examine the nature of their own mind. This is scary business at times. Part of living on the surface and not delving too deeply into the depth of the mind has to do with our notions of keeping ourselves safe. If we can just cling to tangible "real" physical things and keep our mind preoccupied with those, then we don't have to go deeply inside and see the shit that makes up our minds. Sometimes what's in there is crummy and needs some tending to, which can be painful.
Now, don't get me wrong. I do the physical practice of yoga on an almost daily basis. I am firmly committed to keeping my body healthy and well as I age. But, at the same time, I use my daily practice as a way to examine myself. I watch my breath. I watch the whirls of my mind. I watch the sensations happening in the body. I pay attention to me much as a scientist would. Constantly observing and at the same time, constantly trying to stay present with what is.
If you are someone who is not ready to commit to a regular meditation practice, all is not lost. There are ways to be reflective and introspective without a daily practice (though, the work is much more satisfying if you can make it every day!). For more accessible internal work, try just noticing when you experience something truly joyous or beautiful. Observe the sensations in your body/mind that arise as a result. Observe the thoughts that come up and whether you cling to the "goodness" or whether you can let it all go.
You could also journal 5 good things and 5 difficult things that happened to you each day. Reflect upon why you consider them good/bad and how you reacted to each of the experiences. That work should take you about 5 minutes before you go to sleep.
If even that is too challenging, next time you're in the car or riding the bus, do the same sort of work but just mentally. Scan the events of your day and notice how you categorize them (good/bad) and why. Did you react as per usual, or did you experience a new type of reaction?
The more you can tune in to the inner-workings of the mind, the closer you will be to understanding your choices and decisions along this path of life.