Change is never easy. You fight to hold on. You fight to let go.
Do you have your driver’s license? Do you know how to ride a bike? How about how to use a Smartphone? These must probably seem like silly examples, but bear with me a little. If you only study the theory side of driving a car, you wouldn’t be able to drive, right? If you only read about learning how to ride, you would probably fall off the first few times you tried. If you read the manual on your new phone, you won’t suddenly be able to master all of its functions.