Does anyone else get nervous when they experience a high because it’s often accompanied quickly by a low

It’s frustrating because the high can feel so reliving, I definitely experience delusions of grandeur, but in the moment I selfishly want to be able to enjoy it, but then I get panicked about the low inevitably following. This is to the point where even if I get mildly happy or excited by something I worry that it will lead to an extreme pendulum swing of emotion if I don’t keep it under control, does anyone relate and how do you manage the overthinking and over feeling etc?