Huh? Law firms have whole departments related to professional practice and it's a major topic among medics at conferences and elsewhere (you can take masters degrees in medical professional ethics).

However I think it misses the point. Doctors will frequently give options which are not ideal. Patients are offered choices - do you want the surgery (which has risks) or would you like to try the drugs (which are less likely to work and have side effects, but there is less risk and the patient may just not want surgery) or do nothing (which will achieve nothing but the patient may not like the other options and wish to live with the condition).

Similarly lawyers will frequently tell clients they shouldn't follow a course of action (a plea, filing a libel claim) to be over ruled.

Being professional is providing all the information and giving the person the choice and then doing the best job you can based on their decision, it's not about some absolute right or wrong.