Here is the simplest and deepest instruction in the Gita. Whatever you do — work, eating, worship, charity, discipline — offer it to me. That is all. No separate time for devotion is required. Every act becomes worship the moment it is dedicated to the divine.
A cook preparing dinner for the family, a student sitting for an exam, a farmer watering the field — each of these becomes an offering if done with the thought: this is for the divine. Entire karmayoga fits inside this one shloka.
Krishna does not ask Arjuna to abandon action. He does not ask him to become a recluse. He asks for one shift in perspective: whatever you already do, do it as 'mad-arpanam' — my offering. Daily life, unchanged in its form, is transformed in its meaning.