One's good deeds alone are not enough to earn him a place in Olam Habba. He must also have encouraged others and taught them the proper way to serve GD. Together with the merit of teaching others to serve Him, his own righteous deeds, trust, and submissions to the Creator, he can hope to earn himself a place in Olam Habba.
pg 439
Nefesh Hachaim
The name Hamakom describes H'shem being the force holding up the world on His will alone. Man can not comprehend that we are "merely an illusion....constantly kept in existence by the will of H'shem.
Gate Two, Chapter Three pg 109/110