Dear All,
The quote is complete in itself and actually needs no elaboration.
It applies in our worldly pursuits as well as our spiritual sadhana.
Often, in our spiritual sadhana, we fail to reach the state of peace/bliss and somewhere in between, we slip and get carried away from the tempting call of the glittering world.
What Acharya says above is that, let our failure not make us our lose our focus on our ultimate goal in spiritual sadhana.
Let us introspect, let us understand where, during our journey, our ego (any of the kleshas/vasana) took charge and made us slave to them and we lost the race.
Let us pray to God to give us strength not to be slave to similar ego next time and get up and march again and again towards the ONLY goal - Merging with the Source and existing as Source.
Is it not true that when we look back at our past life, we are easily able to identify where all we were wrong?
This capacity to introspect, to identify our mistakes, to correct them - all this point out towards one thing. Only we as human beings are bestowed with the power of discrimination and it is the divine power/energy/consciousness which we say as Antaratman, which illumines our intellect and then our intellect always points out what is / was right and what is/was wrong!
Love.