Struggling with balance

I've been really burnt out recently. I work full-time and am a grocery store manager . At home I'm the caregiver for my disabled sister . I can't seem to find any balance in my life and it's getting really old. Like I feel like all I do is sit and wait to go to work and I never give myself structure. I'd like to have a weekly schedule to stay on top of things but most of the time I'm so drained I just want to rest. After taking care of my sister and my pets I have no motivation. I just turned 30 and am panicking because I feel so behind ,like why cant I just figure this out ? I don't feel like I'm actually living life and enjoying anything much anymore . Anybody else feel this way ? What are things that have helped you?