Lost biggest job bid.. can’t get out of negative space ?

Y’all.. I had a huuuge client thinking about working with my company.. they decided for a very minimal reason that we weren’t good enough.. because our social media presence wasn’t good enough.. I get it but in the scheme of things it’s really minor and not relative to the work we would complete.. the woman said a few rude things during the call and all but hung up on me despite my professionalism.. I can’t get it out of my head or get into a positive space and have been so depressed all day. It takes me back to the days when I had zero clients and no one thought I was good enough.. I persevered since then but.. this one I’m having trouble shaking all those negative thoughts. Any advice ? I think I’m taking it too personal but ugh.. just need to get back to equilibrium.. anyone experience similar? Advice? Please be kind