wcisformen,
Kung Fu, like anything else we want to do well in life, must have a goal. If your goal is to be a better fighter, then you must take a broader overview of this goal. A fighter must have courage and show a commitment to fighting. A fighter must have trust in their ability. If you don’t have these things, then the “style” has nothing to do with this and you must find a way to develop these things which evolve from within you.
The first step is to understand what you are doing and why you do it. The development of relaxation comes from doing something with little effort. Having confidence because you have done it 1000 times.
You are describing the Kung Fu like the ball and chain. This is not what it was meant to be. It was meant as a foundation for you to express your own kung fu, your “Jeet kune do”. Everyone has different bodies, different experiences, and different abilities. So one must gain an honest understanding of their capabilities by their own process. Not rely solely on the style. Just because you are a black belt does not make you a great fighter. Just because you have completed the Ving Tsun system does not make you a great fighter. Just because you are great at Chi Sao does not make you a great fighter.
You must become the captain of your own ship, looking for the things in training that will help you express yourself. Ask yourself if you have a purpose when you play Chi Sao? What do you study or think about when you play? For a real fight do you think you have to stand their in a jong sao? Do you feel you are not doing Ving Tsun if you don’t use bong, tan, and fuk?
Have you discussed your concerns about your fighting ability with your Sifu?
The Kung Fu should not be viewed as a “one size fits all”. As mentioned, you will grow and at some point look into things like strength training, conditioning, and do some free sparring. In regard to your Kung Fu training, take more time to look deeper at where in the Kung Fu training can you emphasize explosiveness?
2 years is not the gauge. Don’t worry about your time, except that you need more time to address this issue.
One thing you can work on right away is to avoid hesitation. Don’t wait for your opponent. Ving Tsun is an aggressive art that asks the questions.
Good luck with your Kung Fu!