Online Assessments Bank on Psychology Today provides self-guided assessments (several that cost a fee) that can help you determine what issues you might be struggling with, including anxiety, depression, mood regulation, and addiction. Free assessments are marked in the column on the right. Please keep in mind that these assessments are not necessarily considered clinically valid (may not be used to actually diagnose), but are more for your awareness or useful as a conversation starter when visiting with a counselor, social worker, or psychologist.
Online Assessments Bank: http://psychologytoday.tests.psychtests.com/
Dr. Peterson's Counseling Resources 