Clinical Acumen

What things after training really helped you develop your clinical acumen? Were there any good books that helped you make better diagnoses based off of patient history (eg exacerbating/mitigating factors)? Any epiphanies you had during your first few years out after training? How long did it take you to really get comfortable/confident in what you were doing?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pain Medicine Source Type: forums