Figure out what methods your lab excels at and make sure your project relies heavily on those. If I could get back all the time I spent setting up new assays that no one in the lab understood, without the support to make them work, I would be... several years younger.
Be organized.
Start writing the paper as soon as you start each project. Every section will help make the project better in its own way. You have to review the field anyway, so write your introduction; you want to keep track of your methods, so write those down; you need publication-quality figures for talks; your results section will help you make sure you don't forget controls; and when you are done the paper will already be written.
In a few years, start some kind of clinical shadowing once a month, but for now, forget that med school ever existed.