I am guilty of this.
And I dearly wish I wasn't, because more often than not it has proven terribly costly. Admittedly, I'm a creature of solitude - and we surely can all use our moments alone from time to time. But in the case of those who sought to help me, those who recognized my acute depression when I could not, those who just wished to understand... I regret not reaching out, or simply appreciating another point of view.
Indeed, it certainly can feel painful to let others in. In most instances, I felt as though the struggle was mine and mine alone - no one should be made to share in my pain. But I understand now that this isn't necessarily true. Regardless of whether or not others can truly comprehend what you're going through - they often really only have your best interests at heart. One should seek help, if needed. And not refuse it, if offered.
I often wonder what the current state of my life - and mental health - would be had I not been so drastically inward. But I know it can be hard to cast off the shells that confine us.
Never hesitate to reach out.