As the hands of the clock move constantly from hour 12 (the highest heaven of the gods) to 6 (the most terrible hell), life in samsara is never certain. Whatever we think we gain we'll lose in the next moment. Everything is momentary and our unenlightened minds are not reliable. This is why there is NO time for the so-called spiritual evolution. All we have is this fragile moment, this short break before death and another uncertain rebirth. In this moment we either accept Amida Buddha’s helping hand or refuse it and waste our human life so hard to obtain.
Understanding the two types of impermanence, of your body and your so-called "spiritual realizations", don't lose your time in vain, and entrust to Amida. Only by being born in His Pure Land after death you can safely get out of samsara and be able to benefit all sentient beings.