The base I was at offered pre-transition counseling through the Mental Health clinic. You could visit them in the clinic or go to one of their seminars on-base. There is also a redeployment health questionnaire that you fill out as part of your medical clearance to head back home. Any red flag indicators (depression, lack of interest, stated frustrations, etc.) resulted in a mandatory appointment to see a provider, just to make sure everything is alright.
Some First Sergeants and Commanders had their own presentations at commander's calls, and the Wing Staff Agency also had its own redeployment/reintegration presentation that it gave at the mass outprocessing briefings.
Upon returning home, there is another reintegration briefing at your home installation. All of the briefings contained the same basic information:
1. Redeployment can be stressful.
2. Both you and your family have changed in your absence.
3. People have adjusted to your absence and getting reacquainted with them will take time.
4. Don't rush headlong into big decisions or large investments.
5. Ease back into your home life.
6. Don't forget about hobbies, family, and quality time.
7. Don't fall into bad habits or toxic coping methods (drugs, alcohol, gambling, etc.)
8. If you need help, reach out -- chaplains, Mental Health, Family Advocacy, Military OneSource, etc.
Redeployment goes differently for everyone. Most people I knew didn't have a bad time of it, but it depends on many factors, to include your unit leadership, you, your experiences, and your family situation, etc. The approach is kind of "one size fits all", which though appreciated, may miss some of the special cases requiring more assistance or special attention when help is needed. However, I will say reintegration processing and services have come a long way, even in the few short years I've been in. There is a lot of help available now that wasn't in times past...but I still feel there's room for improvement.