Person A: I believe that not consuming food after a certain hour will help you lose more fat. I give this advice to all my clients and push this idea across the board on all my social platforms.
(I don't believe this to be true btw)

Now someone comes along and explains to you how this isn't right backed with logic and science because well your belief isn't rooted in nutritional science rather an anecdotal observation. How do you think think Person A is going to react?

Person A "Well this is why I think this..."

It's the most natural reaction in the face of criticism, defense. And of course this is the likely outcome because anyone who is a critic has a different viewpoint from yours. 

However, if you ask for advice from someone who you consider to be insightful and well meaning; you would be well served to not see that as criticism because you're going to be missing out on a lot of wisdom.

Instead of explaining your train of thought trying to rationalize what you think, try and imagine what implanting their advice might do for you. Really visualize the advice and bring it to life. Be it some nutritional advice which might improve your services or tactics on creating more revenue; try and really imagine these scenarios.

When a friend says, "You would do wonders by trying out John's back squat program as it's helped ALOT of people," it's counterproductive to imagine that your squat stinks and no sort of magical program is going to help because you know you're lousy at squatting even though you've been doing the same workout for years now. 

Stop it! Just try the program out. Do it.

And do all the accessory work as instructed. Take before and after pictures. Follow the nutritional protocol as well.

After the program, then if you want to never squat again because it didn't improve your squat by a single pound (which I highly doubt) then sure you don't have to back squat. 

Always remember that advice, especially from a trusted source, is not criticism.