If you want fast, be a nurse. It's the quickest, most in demand education offering the most money.
That being said: Do you want to be a pharmacist or a dentist? When you picture yourself 10 years from now, are you scraping teeth or counting pills (no one yell at me for this)? Trying to decide based on what is fastest is the first problem.
When faced with something that you think is above you, too tough, or beyond your mental capabilities, you have two choices: pass or fail. You can decide to go into this, buy extra books, use supplemental materials, take the time to study and really learn what you think is hard... or you can not fulfill your dream of being a pharmacist.
If you decide you want to be a pharmacist for sure and the anxiety still gets to you, do what I do sometimes: imagine yourself getting that white coat, earning your degree... imagine the confidence you'll have as a practicing pharmacist, and fake that confidence now. You'll need it to get through organic chem.
If you don't get a mini high from thinking about earning your coat, also rethink this field.
Everything has a cheat guide, even organic. You CAN do this if you decide that you will.