Hello and thank you for your question.
Yes and no. Yes it affects your brain and prevents you from seeing the big picture of things. Marijuana breaks your concentration on a whole spectrum of thought and makes you think about one particular thing and think of it over and over again. This gives you the perspective that you had a "revelation." But in reality if you wrote this down and read it when you were sober, it would most likely not make sense. It damages your short term memory during that time and actually reduces your ability to retain information. I would say that discontinuing the smoking
would help recover cognitive abilities in a short period of time. Being a doctor myself I would tell you it would be best to discontinue the use because if caught using, selling, or possession you can damage your career and ruin your chance of becoming a doctor. If you have a felony regarding drugs it may make it impossible for you to be able to prescribe medication and have a controlled substance identification number from the DEA. 13-15 years of age is not a good time to smoke marijuana since your brain is in the process of developing. I would say, quit and you should be fine.