The Oxford Dictionary defines patience as, "The capacity to tolerate delay, trouble, or suffering without becoming angry or upset."
However, patience can also be defined as the capacity to remain within the present moment, restraining the mind's desire to reach for things different and/or in the future. In this essence, yoga is a definite practice of patience.
The eight limbs of yoga require consistent work over a lifetime. Overnight success does not figure into yoga.
In practice, as you move through your yoga poses, practise your meditation, and/or your yoga breath work. Work to stay within each moment.
This is no easy task, to be sure. But through consistent yoga practice, the tug of war that takes place within the mind, causing it to wander aimlessly, begins to weaken. The mind begins to settle and patience becomes your natural state of being.
As mentioned before, yogis are well prepared for their practice to evolve over many lifetimes. It is therefore a basic belief within yoga that no effort is ever wasted.
No matter how insignificant the progress may seem to be, it does in fact matter. At times your progress will appear to come in leaps and bounds, spurring you on with ease.
At other times, your progress will come in seemingly minute increments. It is at these times that your patience within your practice is especially tested.
Do not give up. Instead, be aware of how your self-imposed timelines and expectations are keeping you from the present moment.
This moment, complete with its beauty and progress, is being missed as your mind wanders off into the realms of 'should be' and 'wish it were.'
Surrender your timelines, release your expectations. They are based on false realities. They promote intolerance of the self and cause you to be blind to your own inevitable progress taking place in this moment.
Be aware of self-aggression in your practice. Be gentle with yourself. You will come to realize all self-aggression arises from the ego.