Post-Order Regret Syndrome

Does anyone else ever get this after ordering a big item?

I've been decided on an American Standard P for months (played like 10 of them in the process), but I'm a student and this is a gigantic purchase for me. The second I left the music store after ordering and putting 40% down, I immediately started thinking "what-ifs" about other basses, and if they would better suit my needs. It's driving me crazy! Do you think this regret will fade away the second I see my sunburst beauty?