We review the grant of summary judgment de novo, considering the evidence in the light most favorable to the nonmoving party, giving that party the benefit of all reasonable inferences without assessing credibility. Miller v. National Cas. Co., 61 F.3d 627, 628 (8th Cir.1995). Summary judgment is only appropriate if there is “no genuine issue as to any material fact and ... the moving party is entitled to judgment as a matter of law.” Fed.R.Civ.P. 56(c).
The ADA prohibits employment discrimination against a qualified individual because of a disability. See 42 U.S.C. § 12112(a). In all constructive discharge and harassment eases under the ADA and the MHRA, the plaintiff must first make out a prima facie case of discrimination or face dismissal of her claim. See Aucutt v. Six Flags Over Mid-America, Inc., 85 F.3d 1311, 1318 (8th Cir.1996). To establish a prima facie case Cody must show that:
she is a disabled person within the meaning of the ADA, that she is qualified to perform the essential functions of the job (either with or without reasonable accommodation), and that she has suffered an adverse employment action under circumstances from which an inference of unlawful discrimination arises.
Price v. S-B Power Tool, 75 F.3d 362, 365 (8th Cir.), cert. denied, — U.S. -, 117 S.Ct. 274, 136 L.Ed.2d 197 (1996).
.The ADA defines “disability” as “(A) a physical or mental impairment that substantially limits one or more of the major life activities of such individual; (B) a record of such impairment; or (C) being regarded as having such an impairment.” 42 U.S.C. § 12102(2). Major life activities include “functions such as caring for oneself, performing manual tasks, walking, seeing, hearing, speaking, breathing, learning, and working.” 29 C.F.R. § 1630.2(i); See, Aucutt, 85 F.3d at 1319 (adopting EEOC guidelines to interpret “major life activities”).
Cody maintains that her depression substantially limits her major life activities, causing a loss of sleep and appetite, and interferes with the ability “to have intimate relations.” She also claims that her condition results in anxiety and distress in elevators and while driving and that it makes it difficult for her to perform her job in certain areas of St. Louis. She stated in an affidavit that her depression makes “every activity a great struggle.”
Cody was always able to work and received good reviews, and she is unable to point to a single occasion when her depression impeded her work performance. She submitted no evidence of a diagnosis of depression and testified that she always ate at least one meal a day and slept between four and twelve hours a day. She testified that she experienced anxiety in elevators, driving, and entering what she perceives as high crime areas. The anxiety did not, however, make her unable to perform required tasks. This evidence did not rise to the level required to show a substantial limitation of a major life activity. See 29 C.F.R. 1630.2(j)(3)(i) (even an inability to perform a single, particular job does not constitute a substantial limitation on the major life activity of working). While Cody’s statements, viewed in the light most favorable to her, demonstrate that her depression caused difficulties in her life, she did not show it was such a substantial impairment as to amount to a disability under the ADA. See Aucutt, 85 F.3d at 1319; see also 42 U.S.C. § 12102(2)(A).
Cigna’s psychiatric expert examined Cody over three years after she quit her job and concluded that she suffered from paranoia which interferes with her ability to interpret facts accurately and that she has a “schizo-typal personality disorder.” Cody claims this diagnosis creates an issue of fact about whether she was disabled, since interpretation of events is a major life function. There was no evidence that she actually misper-ceived reality, however, or that she suffered a condition which caused any other impairment to her life functions. Nor did her evidence show a correlation between her depression and its symptoms and a schizotypal personality disorder.
Cody also argues that she is disabled under the ADA because Cigna regarded her as having an impairment which substantially limited her major life activities.