What is the test for establishing that a plaintiff has met their burden of establishing that their injury is personal?

Raines v. Byrd, 521 U.S. 811, 820 (1997) ("[W]e must put aside the natural urge to proceed directly to the merits of this important dispute and to 'settle' it for the sake of convenience and efficiency. Instead, we must carefully inquire as to whether appellees have met their burden of establishing that their claimed injury is personal, particularized, concrete, and otherwise judicially cognizable.").