Where does your focus go on a regular basis - to the things you want? or to the things you need?
If you spend much of your time thinking about things you want, I encourage you to think about how those wants fit into your goals. Are they short term wants? long term wants? wants that are relate to what you need? or wants that are distracting you from what you need?
You will get anything and everything you ask for. Sometimes you can change your mind before you get something you've previously asked for. Earth and time require some patience to let things unfold so there is in this sense a "processing period" for getting the things you want, you can change your order at any point before it is being shipped to you. Sometimes for an extra charge if you really want to return it before it gets to your doorstep you can do so for an extra charge.
Since you do indeed get most everything you ask for, it is important to remain consistent, disciplined, and focused on asking yourself why you want something before you start really wanting it.
Lucky for us the universe is pretty good at teaching us lessons about what we actually need to want by giving us what we ask for. There is this rather ironic and satirical side to divine integration, or "fate" as we know it that helps us look back, laugh at ourselves, and learn from our past mistakes. But for efficiency, learning from your present mistakes is best, so you can turn them into successes before they end up failures.
Yoga wise, focus is very important in various ways. It's the law of attraction in a very simple form. What you desire to do and become while you practice yoga (your intention) that you will do and become.
During asana practice focus on your intention for the time you spend on your mat that day. Direct your attention and focus towards one single thing consistently while you practice. Each time you come to a resting pose, centering pose, or grounding pose think of your intention. Whenever you're struggling to hold a balancing posture, think of your intention. Make that one thing appear the forefront of your thought processes and triggers.
For balance in a posture, the focus of your gaze should find one directional point in front of you called a drishti. There are 9 different drishti focal points.
During meditation focus should be directed towards becoming the observer of your thoughts, and observing the patterns of thought and when they arise. Be the examiner of your own scientific process.
You can also choose to direct your meditative focus towards something you want to manifest or create in your life - space to love more, financial abundance, clarity on a situation, etc. A great drishti to use during meditation is to the third eye (anja chakra), or the place between your eyebrows.