How to express "to the extent of my ability" after receiving a recommendation letter?

Question

I asked and received a letter of recommendation from someone outside my company. This person is considered an expert in the field, and has much more experience than me (decades v. years).

I am very grateful for his letter, and would like to say something like:

If and when you need it, I will be happy to return the favor to the extent of my ability.

As this person is so much more experienced than I am, I don’t have any idea as to how to express this in a respectful way. I don’t know how I would be returning this favor in the future, nor how much value it can bring to him.

The goal is to express that I am grateful. Can you tell me what would be an appropriate way to do this?

Answer 1

If and when you need it, I will be happy to return the favor to the extent of my ability.

You could use to the best of my ability.

to the best of your ability

PHRASE

If you do something to the best of your abilities or to the best of your ability, you do it as well as you can.

I take care of them to the best of my abilities.

Collins