When the air pressure changes, this has a direct effect on temperatures. I didn't realise that a high-pressure area has so much influence that its higher pressure compresses the air to such an extent that it causes temperatures to rise. I hardly notice the increased air pressure, but I do notice the higher - or in the case of a low pressure area - lower temperatures. So if I just look at the temperatures and how they can change quite frequently during seasonal transitions, for example, I would conclude that the weather is simply very moody again. This is caused by alternating areas of low and high pressure. Perhaps you are one of those people who are said to be moody or perceive yourself to be so. If so, the weather example could help you to understand why you or others quickly change your mood: Namely, changing external pressures.
I wish you an extraordinary day!