It's not certain which will come first - Tomorrow or the next life. Therefore, rather than working for tomorrow, it is better to work for the next life.
from Kadampa Teachings, Lama Zopa Rimpoche.
Medicine Buddha Mantra
TADYATHA OM BHEKHANDZYE BHEKHANDZYE MAHA BHEKANDZYE (BHEKHANDZYE) RADZA SAMUDGATE SVAHA