Albert Barnes Commentary John 8:54

"Jesus answered, If I glorify myself, my glory is nothing: it is my Father that glorifieth me; of whom ye say, that he is your God;" — John 8:54 (ASV)

If I honour myself. If I commend or praise myself. If I had no other honour and sought no other honour than that which proceeds from a desire to glorify myself.

My honour is nothing. My commendation or praise of myself would be of no value. See Barnes on John 5:31.