Beginners should not expect to post times that would champions would be proud to claim. Experienced drivers who have been idle should expect to spend practice time to find and refine old skills. Once you perform a skill to your own satisfaction you tend to stop looking for improvement. There is such an emphasis today on instant gratification and being a winner that we often forget the valuable lessons we learn from losing. Remember that the fact of trying something, even if it does not work, often opens doors that would have otherwise remained closed.
Small failures lead to incremental improvements.
More than any film, bench-racing session or ride a long, not being able to make it through a turn will sear into your brain the importance of doing it right. Discipline yourself to concentrate on what it takes to be where you need to be. On track, focus on the present and save analysis for the paddock. It is the driver's job to learn to do the hard thing easily, gracefully, efficiently. Improvement is there for the taking only if the effort is invested.