Devotion to Bhagwan with a true heart is the ultimate reality for our lives. Knowledge is like a lamp, devotion like a gem – both shine light. The winds of lust, anger (emotion), etc can blow out a lamp but the gem continues to shine even in the winds that blow. Therefore knowledge will get you halfway and will help your cycles of rebirth until you reach a level of pure devotion which will lead to bliss and oneness with Bhagavan.
There are two types of faith, one from devotion and the other from fear. Fear is blind faith and built on pride. Devotion removes all fears, anxieties, stresses and negativity by devaluing the importance of them making them irrelevant to you thus eradicating them from your mind leaving you full of internal happiness and bliss with Bhagavan.
In the Bhagavad Gita Sri Krishna says to Arjuna the following:
Bg 12.1 — Arjuna inquired: Which are considered to be more perfect, those who are always properly engaged in Your devotional service or those who worship the impersonal Brahman, the unmanifested?
Bg 12.2 — The Supreme Personality of Godhead said: Those who ﬁx their minds on My personal form and are always engaged in worshiping Me with great and transcendental faith are considered by Me to be most perfect.
Bg 12.3-4 — But those who fully worship the unmanifested, that which lies beyond the perception of the senses, the all-pervading, inconceivable, unchanging, ﬁxed and immovable – the impersonal conception of the Absolute Truth – by controlling the various senses and being equally disposed to everyone, such persons, engaged in the welfare of all, at last achieve Me.
Bg 12.5 — For those whose minds are attached to the unmanifested, impersonal feature of the Supreme, advancement is very troublesome. To make progress in that discipline is always difﬁcult for those who are embodied.
Bg 12.6-7 — But those who worship Me, giving up all their activities unto Me and being devoted to Me without deviation, engaged in devotional service and always meditating upon Me, having ﬁxed their minds upon Me, O son of Pṛthā – for them I am the swift deliverer from the ocean of birth and death.
Bg 12.8 — Just ﬁx your mind upon Me, the Supreme Personality of Godhead, and engage all your intelligence in Me. Thus you will live in Me always, without a doubt.
Bg 12.9 — My dear Arjuna, O winner of wealth, if you cannot ﬁx your mind upon Me without deviation, then follow the regulative principles of bhakti-yoga. In this way develop a desire to attain Me.
Bg 12.10 — If you cannot practice the regulations of bhakti-yoga, then just try to work for Me, because by working for Me you will come to the perfect stage.
In the Srimad Bhagwatam, Lord Brahma says the following to Lord Krishna:
SB 10.14.3 — Those who, even while remaining situated in their established social positions, throw away the process of speculative knowledge and with their body, words and mind offer all respects to descriptions of Your personality and activities, dedicating their lives to these narrations, which are vibrated by You personally and by Your pure devotees, certainly conquer Your Lordship, although You are otherwise unconquerable by anyone within the three worlds.
SB 10.14.4 — My dear Lord, devotional service unto You is the best path for self-realization. If someone gives up that path and engages in the cultivation of speculative knowledge, he will simply undergo a troublesome process and will not achieve his desired result. As a person who beats an empty husk of wheat cannot get grain, one who simply speculates cannot achieve self-realization. His only gain is trouble.
SB 10.14.5 — O almighty Lord, in the past many yogīs in this world achieved the platform of devotional service by offering all their endeavors unto You and faithfully carrying out their prescribed duties. Through such devotional service, perfected by the processes of hearing and chanting about You, they came to understand You, O infallible one, and could easily surrender to You and achieve Your supreme abode.
SB 10.14.6 — Nondevotees, however, cannot realize You in Your full personal feature. Nevertheless, it may be possible for them to realize Your expansion as the impersonal Supreme by cultivating direct perception of the Self within the heart. But they can do this only by purifying their mind and senses of all conceptions of material distinctions and all attachment to material sense objects. Only in this way will Your impersonal feature manifest itself to them.