I understand that your are under alot of stress with job hunting and the new behaviors your child is picking up at daycare, but please don't smoke becasue you are trying to "escape" many more problems can occur becasue of using. It is good though that you go outside so that it does not affect your wife and child. I am sure that your child does not look at you as a failure, you are the most important male in your childs life. Also im sure that your wife understands. Job hunting can be very stressful. Try to remind yourself that you are an able worker and those that don't hire you are missing out on a great worker and sooner or later an employer will see this triat and hire you
Hope Everything works out,
-Jason