There are many elements that must be put in place before truthful behavior is realized. If you subscribe to Meisner's approach, as I do, then you acknowledge that the first thing you must learn is to listen and respond from your truthful self. To achieve that "truth" requires that you put all your attention on the other person (the object of your behavior) and "work off" without "acting" the moment. The changes in the "repetition" occur because they have to, not because we want them to. The "truth" we seek concerns what is happening right here, right now, not what we want or think it should be.
Since "working off" constitutes the majority of the actor's work you have to sustain a connection to your partner on a moment to moment basis. It may sound easy but maintaining a strong connection to your partner takes time, effort and a good deal of practice. You have to put in time on a daily basis to understand on a visceral level what it means to leave yourself alone, give up trying as a means of achieving your goals, while allowing the guiding principles of the technique to penetrate on a personal level; don't do anything unless something happens to make you do it, what you do doesn't depend on you it depends on the other person, the quality of your work depend on how fully you do what you do. These three principles are in constant motion at all times.
You can't rush the process. Take the time to establish a strong technical foundation before you tackle scene work. How will you know when you're ready to move forward? When your moment to moment work feels like you're doing everything for the first time. That is improvisation to a tee. Keep in mind that the first 2 years of your training is just the tip of the iceberg. To work at the professional level you will have to develop many more skills.
These days, with technology moving at the speed of light, anyone with a high-tech camera, a "script", and a little spit and vinegar, thinks they are ready to act and/or direct a film. I do not mean to disparage anyone's effort or desire to realize their dreams, but sometimes you have to take a step back and recognize that you just aren't ready. Those that are capable of working on the professional level have achieved success with more than a trifle of blood, sweat and tears.
Some years ago I was reading an article in Modern Drummer Magazine about drummer extraordinaire, Virgil Donati. His work ethic boggled my mind. According to the article when he is not on the road playing with his band, or doing workshops and seminars, he is practicing in his West Hollywood studio for as much as 7 hours, daily! (a fellow musician once saw him after a practice session and said that he looked like he had just stepped out of the shower). Yet for him the learning process is never over. There is no finish line. No end point.
Growth, learning and change are parts of the whole dynamic. They are infinite. The process is never over for the artist. Your craft/art is not a part-time job. There is always something new to learn. Not only about our art, but equally if not more important, about ourselves. Introspection leads to self-awareness and that is the genesis of change. Acknowledging that we are never finished, that there is always something more to do if we are to be at our very best are essential for personal. Make sure the bar you are reaching for presents you with necessary challenges. And when you reach high enough to grasp the bar, raise it higher and get back to work.