According to the Pew Research Center, 75 percent of members of the "Sandwich Generation"—adults between the ages of 40 and 59—believe it’s an adult child’s responsibility to care for an aging parent who needs help. Actress Hillary Swank is one of millions in her age group putting her money where her mouth is by pressing the pause button on her career so she can care for her father as he recovers from a lung transplant. No matter how close the relationship, anyone who’s ever been a full-time caregiver can attest to the fact that it's a stressful job. According to the Mayo Clinic, these are some important signs of caregiver stress to look out for: sleeping too much or too little, gaining or losing a lot of weight, losing interest in activities you used to enjoy, feeling overwhelmed or constantly worried, and abusing alcohol or drugs (including prescription medications). If you or a loved one is exhibiting any of these signs, the good news is there’s an extensive (free) support network available to help. A simple Internet search of “caregiver support group” will yield local results, no matter where you live. And celebrities who are experiencing the same thing, like Hillary Swank, serve as an important reminder that you’re not alone. Have you been a caregiver? What was the hardest part of the job, and how did you deal with stress and anxiety? Share your personal stories in the comments.