English:
One can never find happiness in this world BUT only in the spiritual world & that too easily
Perfect life and Perfect happiness & Eternal happiness, can never be found in this material world BUT lies only in spiritual world and it is quite easy to obtain almost as easy as just entering the temple of one's own heart with 100% faith (sincerity).
God is interested only in our sincere heart and not in our body (तन) & wealth (धन), so our body and wealth can be used for the worldly purposes & duties but the mind should be diverted/surrendered completely to God.
Whereas happiness is always illusionary in this world like a mirage, as this world is titled दुखाल्यम अशाश्वत (mountain of sorrows and that too temporary) by the Creator God Himself, even if we work hard 24 hours a day.
Are Biden or Trump or Putin or Modi or Bill Gates or Elon Musk or Mukesh Ambani happy ?
God has given us brain (ज्ञान शक्ति) as well as free will (इच्छा शक्ति) to either "use" (उपयोग) our human birth or "misuse" (दुरुपयोग) it.
It all depends on our choice whether we simply want to work hard 24 hours x 7 like asses (गधों की तरह) for illusionary happiness or we want to achieve perfect happiness by easy way, which is simply to please God and that can happen only if we know & follow what God wants from us & herein comes the utility of spiritual knowledge & loving devotion (भक्ति)
After death & rebirth among any of 84 lakh yonies, starting from a mother's hell like womb for 9 months or so, everyone has to again start from scratch (zero) But if you become Krsna conscious, even if you cannot finish the job in this life, even if you fall, still, you will be given another chance of human body, to begin where you ended, to begin from the point where you fell down
So, all the work (office,home) has to be done undoubtedly but while remembering Him & dedicating our thoughts, words and deeds to Him. This is the easiest way.
Sr 1.
In the Bhagavad-gita, there is one verse in the 5th chapter, the 21st verse. It says:
Such a liberated person is not attracted to material sense pleasure but is always in trance enjoying the pleasure within. In this way the self-realised person enjoys unlimited happiness for he concentrates on the Supreme.Bhagavad-gita 5.21
So in this verse we are being told that we need to direct the search for happiness actually inward rather than out to this world, the world in which we find ourselves. It has to become an internal quest where we are actually in touch with our true identity.
https://vedabase.io/en/library/bg/5/21/
Sr 2
An intelligent person does not take part in the sources of misery, which are due to contact with the material senses. O son of Kuntī, such pleasures have a beginning and an end, and so the wise man does not delight in them.Bhagavad-gita 5.22
I mean it’s like, wow. This is quite a novel concept for most people because of the society in which we live and the way in which people view this world, we do not actually hear these types of ideas but there is a couple that really, really jump out. One is the nature of so-called material happiness, the little joys that we can get in life. They have a beginning and therefore they must have an end; you cannot have a beginning without an end. That is the nature of things, part of this duality. So if something has a beginning and we know that it surely will end, of course putting a lot of effort into that experience is obviously not going to be very smart.
https://vedabase.io/en/library/bg/5/22/
Krishna, He advises Arjuna, He says;
Oh son of Kunti, the nonpermanent (nonpermanent) appearance of happiness and distress, and their disappearance in due course, are like the appearance and disappearance of winter and summer seasons. They arise from sense perception, O scion of Bharata, and one must learn to tolerate them without being disturbed.
O best amongst men [Arjuna], the person who is not disturbed by happiness and distress and is steady in both is certainly eligible for liberation.Bhagavad-gita 2.14-15
https://vedabase.io/en/library/bg/2/14/
Sr. 7
Another verse from the 6th Chapter, 27th Verse, it says;
A yogi whose mind is fixed on Me (Krishna) verily attains the highest perfection of transcendental happiness. He is beyond the mode of passion, he realizes his qualitative identity with the Supreme, and thus he is free from all the reactions to past deeds.Bhagavad-gita 6.27