This is also why they say that your Aspiration for the Pureland
must be stronger than your (negative) Karma. If your
Aspiration is very, very strong, even if there are innate
tendencies of clinging, you can still overcome them sufficiently in
the last moments.
愿力要强过业力。
I also think sufficient discernment is also necessary while we
are living. What sort of discernment? The discernment
that basically this body and this mundane world is not worth
clinging onto. Also, the discernment that because everything
is ultimately transient, that we have had myriad family members in
myriad rebirths, we have enjoyed many pleasures and displeasures in
myriad lifetimes, etc. With such discernment about the
unsatisfactory nature of Samsara, hopefully, it becomes
easier to willingly move on to the Pureland after our last
breath.
Yes, you are right. I understand that we have to practice let go
of this samsara everyday or else we are unable to do it at our last
breath.