I was fortunate to have just completed a residency and that helped build those skills. The APTA also has a good resources about ethics and professionalism – https://www.apta.org/your-practice/ethics-and-professionalism
If you’re an APTA member, they have additional resources including a monthly publication about ethics and professionalism.
The APTA learning center also has a series of professionalism modules you can complete.