I actually think both are beneficial. Trainers help you move out your comfort zone and expose you to new things and therapist provide an unbiased opinion. If not a therapist, I'd like to find at least a career mentor for sure.
Personal trainers, nutritionists etc are for lazy people

All the information you need is free with quick google searches
Just like you can choose to use to google every aspect of your life you wish to improve and I choose to pay someone who has already done the research and is ready to help me execute. 
