After working in a variety of capacities and retiring, I am now driven by a desire to serve Islam. Could you please advise me on how to proceed?
You must have the appropriate resolve and true intent. Allah Ta’ala blesses an activity performed only for the sake of Allah Ta’ala. You should be aware of the correct path and stick to it. The term straight path’ refers to following in the footsteps of our Prophet (Sallallahu Alayhi Wasallam). You can serve Islam by prioritizing what is in the best interests of Islam over your own whims and preferences.