Divine Qualities: Sincerity

Q. 1. I was just reading BG 2.40 and had a question in relation to what Krishna says there:

Is it the case that anyone performing any small amount of devotional service for the explicit purpose of pleasing God, with or without the knowledge of what is actually pleasing to God, will have the chance to be born again in a body suitable for taking up devotional service (meaning, at least a human body)?

Q. How can one know if Krishna is pleased or not pleased by one's action? Or, how do I know that whatever I am doing besides devotional services is pleasing Krishna?

Q. The intelligence of a devotee, the recalling capacity and memory comes from purva-karma. We need these assets for preaching. Can we do anything to increase this?

Q. What qualities or activities in devotee(s) or disciple(s) pleases the spiritual master or saintly persons the most?

What pleases saintly persons the most is to see a devotee/disciple developing transcendental Vaishnava qualities -- or even their earnest effort to do so.

They are also pleased to see someone sincerely engaging in the *activities* of devotion, such as hearing, chanting, serving the Deities, serving Vaishnavas, observing the regulative principles of devotional service, accepting voluntary austerities for Krishna etc.