Now the App.Path is good enough for this and 90% of the time your app will be running from a folder. If it runs from the root of a drive then that will cause a problem. What I do is use a String variable Ap to find the app location. If you have multiple Forms that need this location then declare it as Public in a Module.
This is about the only place I like using an IIf statement.
Dim AppPath As String
AppPath = IIf(Right(App.Path, 1) = "\", App.Path, App.Path & "\")