Patanjali beautifully says: Whichever feeling you are meditating on, you become that feeling.
That's what He calls as, Yathbhavam Thathbavathi. This is a verse in the Upanishad (embody the experiences and ecstatic realizations of great seers who perceived the reality and enjoyed it). Again and again on whatever we meditate, we will come in tune with that. If we meditate on blissful feeling constantly, if we meditate on the blissful mental plane and if that meditation keeps happening in us, if that meditation keeps flowering in us, naturally, the clarity in knowledge and the energy to live our life will keep flowering in us. So 'Be Blissful' are not just ordinary words. It is a spiritual achievement.
So I pray to the ultimate divine to make you feel the Nithyam (eternal). May you be deeply involved in Dhyanam (Mediation) and express the bliss. Be in the eternal bliss and become the eternal bliss. Thank You.