The Alcohol and Drug Evaluation is usually court-mandated and ordered by the judge as a term & condition for the successful completion of a probationary period, also, ordered by a judge or court system.
If you are covered by the DOT and have violated a DOT drug and alcohol program regulation, you must be evaluated, by an SAP and complete a remedial intervention or education program recommended by the SAP before you can be released to return to a safety-sensitive job.
Anger is a common and normal emotion. In general, anger has been given a negative connotation. This is simply due to the destructive nature it can possess when not harnessed properly. While it’s true you can’t hold it in and let it fester, it’s imperative that you have some sort of release.