I have learned this phrase but I am not sure how to use it properly. These are sentences I wrote.Could you check them if they were written grammatically correctly?
1.Having a college degree only goes so far to reach your goals in a life.
2.Having a college degree only goes so far on reaching your goals in a life.
3.Having a college degree only goes so far for reaching your goals in a life.
4.Average pensions only go so far meets your need of money.
5.Even being filhty-rich could make you happy only go so far, if you don't have real friends.
6.Beauty/ being good-looking only goes so far ...help making new friends.
(You can rewrite my sentences too,as long as the meanings don't change much.I would be happy if you give more examples.)