Yes, developing a regular sleeping pattern can help you achieve stability. My therapist and pdoc always used to say that to me. Though of course there's no guarantee it's going to work 100% of the time. Yet, is there anything guaranteed to work 100% of the time? Even medication doesn't always work, so take that into consideration, too.

Exercise can help as well. Sometimes it amps me up, though, if I do it too late in the evening. But it can be a nice thing to do to release some frustration or agitation if you have it. It can also help with depression IMO because you're distracting yourself.