What to do with the past, present, and future? How not to be affected by the past, and be happy in the present, and not hanker of things for the future. 

There has to be a sufficient degree of ignorance to be engaged in material activities and be happy in it. If we have knowledge, then we won't really enjoy materially. Devotional service is transcendental, but your consciousness may not be so. 

The Lord is open to being seen by devotees. but non-devotees cannot see him. When Krishna came to this world, not everyone could see him. 

Amazing stories about Prabhupada, such as when a devotee made buckwheat halava for him. 

What to do if we get wrong instructions about grihastha asrama?

How to forgive others and not hold grudges?

We are controlled by Yoga maya or Maha maya, depending on our consciousness and activities. Krishna conscious activities look beautiful under the yoga-maya potency, and they seem boring when wea re under the maha maya potency.

Spiritual life means its not just you but you and God working together. No matter how difficult your life gets, you always have internal guidance by the Supersoul. 

We are controlled by Krishna's energy both in the material world, and the spiritual world. 

Prabhupada said that service is our dharma, because it is the nature of the pure spiritual soul. If we are always just serving ourselves, then we will feel some emptiness. In Bhagavad-Gita, Chapter 8, Krishna says: Love me, but if you can't love me, then do the practice of bhakti. If you can't do bhakti then do karma yoga. And if you can't even do karma yoga, then find someone and serve them. Service breaks our self-centered attitude.