Is there happiness in spirituality? How to build faith?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

राजविद्या राजगुह्यं पवित्रमिदमुत्तमम्।

प्रत्यक्षावगमं धर्म्यं सुसुखं कर्तुमव्ययम्।।2।।

rāja-vidyā rāja-guhyaṁ pavitram idam uttamam

pratyakṣhāvagamaṁ dharmyaṁ su-sukhaṁ kartum avyayam

Of sciences, the highest; of profundities, the deepest; of purifiers, the supreme, is this; realisable by direct perception, endowed with (immense) merit, very easy to perform, and of an imperishable nature.

~ Chapter 9, Verse 2

✥ ✥ ✥

अश्रद्दधाना: पुरुषा धर्मस्यास्य परन्तप।

अप्राप्य मां निवर्तन्ते मृत्युसंसारवर्त्मनि।।3।।

aśhraddadhānāḥ puruṣhā dharmasyāsya parantapa

aprāpya māṁ nivartante mṛityu-samsāra-vartmani