cannot see further than the end of one’s nose

can't see (any) further than the end of (one's) nose

1. To lack the ability to foresee problems, issues, or obligations beyond the present or immediate future. Our boss is ambitious, but she can't see any further than her nose when it comes to scheduling projects with realistic deadlines.
2. To be so preoccupied with oneself or one's own problems as to be unaware of or indifferent to larger issues or other people. My ex-husband is always so wrapped up in work that he can't see further than the end of his nose, hardly ever making any time for me or the kids.
See also: end, further, nose, of, see
Farlex Dictionary of Idioms.

cannot see further than the end of one’s nose

verb
See see no further than the end of one’s nose
See also: cannot, end, further, nose, of, see
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • cannot see any further than the end of one’s nose
  • can't see (any) further than the end of (one's) nose
  • can't see further than (the end of) (one's) (own) nose
  • can't see farther than the end of (one's) nose
  • farther
  • can't see farther than (one's) nose
  • cannot see further than your nose
  • see no further than (the end of) (one's) (own) nose
  • see no further than the end of nose
  • horizon