Going to new country can improve one's fortune

 Or HaChaim (Bereishis (12:01) Although man's success in this world does not depend on the amount of effort he invests in his material progress as we know from Psalms 75,7: "for what lifts a man comes not from the east or the west or the wilderness of hills;" our sages say that every time the word mountains appears in the Bible it means mountains except in this instance. In Psalms 75,7 the word describes a spiritual uplift. This comment of our sages notwithstanding, the fact that a change of one's physical environment brings in its wake an improvement in one's fortune is not to be ignored. This was why G'd commanded Abraham specifically to leave his country.