Start small and without keeping score; this verse says the doing itself, freed from pressure, is what carries you upward.
तस्मादसक्तः सततं कार्यं कर्म समाचर। असक्तो ह्याचरन्कर्म परमाप्नोति पूरुषः।।3.19।।
tasmād asaktaḥ satataṁ kāryaṁ karma samāchara asakto hyācharan karma param āpnoti pūruṣhaḥ
Therefore, do thou always perform actions which are obligatory, without attachment;—by performing action without attachment, one attains to the highest.
— Swami Swarupananda