You didn't really practice Zen if you didn't have a teacher. Zen empahsises having a teacher, more than any other school of Buddhism. Plus going to the zendo is of vital imporatance, more important than reading books, knowing about Jhana's etc. Zazen is about stripping away, not about gain. It's not about finding some blissed out state of samadhi, but seeing into your true nature, only then, can one attain enlightenment.
"The original heart/mind shines like pure, clear water with the sweetest taste. But if the heart is pure, is our practice over? No, we must not cling even to this purity. We must go beyond all duality, all concepts, all bad, all good, all pure, all impure. We must go beyond self and nonself, beyond birth and death. When we see with the eye of wisdom, we know that the true Buddha is timeless, unborn, unrelated to any body, any history, any image. Buddha is the ground of all being, the realization of the truth of the unmoving mind.” Ajahn Chah