you are confusing cortico steroids vs. anabolic steroids first off
2nd epidurals will only numb the pain, it won't cure you or solve the problem.
the #1 reason for chronic back pain is being too fat.. so lose weight
the next is having a desk job.. get a stand up desk
and finally i recommend trying hot yoga, it will help bigtime add flexibility and loosen up muscles
stay away from chiropractors and massage therapists, they will actually make the problem WORSE 99% of the time