How do you overcome fear of losing rating?

Rating doesn't matter, unless you convince yourself that it matters.  What truly matters is that you have great enjoyment, great love for this crazy, mysterious game.  It is the enjoyment, the music, the poetry of the game... even the ephemeral 5 minute or 10 minute dance is as interesting as the great symphony that can be composed in a cc or daily game.  You want a high rating because you want recognition, edification, the self adulation of being exceptional.  That is another amazing thing about chess.  It taps into our deep qualities. If you're an egotistical person, it shows. If you're an artist you can see it. If you're a coward, then that shows too. If you're a genius, then that shows. But is dancing only for geniuses? Is music only for Beethoven and Mozart.  If you can play some music reasonably well, and enjoy it immensely, appreciate it immensely, should you be frustrated because you don't approach the level of a Bach or a Beethoven, or even some less talented masters?  I say forget about ratings.  That is my way. See and appreciate the possibilities and richness and music of the game.  Ponder the mysteries. Marvel at the depths and simplicity also. Creativity is a quality you bring to the activity, no matter your skill. Don't torture yourself.  Enjoy yourself! 

As a beginner, I used to grind chess relentlessly. I played about 5-8 games everyday regardless of result and actually enjoyed the ride. Now though... I find myself actually being scared to play as much rated chess games as I used to. I just usually play against bots (which isn't exactly beneficial) and unrated (where I find myself or/and my opponent not taking the game as serious). I am just locked with this awful mindset: (You worked hard to get those points. You wanna risk giving them away?) I don't want to have this kind of fear looming over me forever and hindering my progress, so I ask of any similar experiences that you could share and some tips I can apply to try and overcome my fear.

That rating youre so worried about?  It is nothing more than an estimate of your last performance.  So of course it is going to go up and down.  You dont think that you actually lost 50 pints of chess ability do you?  Or you suddenly gained 50 points of chess wisdom?

Also, chess.com ratings can be inaccurate.

Here is another way to put it:

If you convince yourself that all that matters is how much actual enjoyment there is for you in the game, then your main problem will be how can I enjoy it more?  Maybe you notice at that point that it's not the rating points, but the fact of actually losing because of senseless blunders that is so disturbing.  Stupid senseless moves ruin it.  So you start exploring what can be done to make beautiful, precise, or interesting moves, nice ideas, etc. Then you're studying artistry, or science, or whatever, on the chess board.. its then study in aesthetics, or style, or deep truth, or whatever.. You look at the nice classical games, nice studies, nice puzzles and you're not in a rush, you're not heated... you're really enjoying yourself.

Personally, I never turn on an engine. I'm in no rush. But I studied mathematics for a long time, and that teaches you to be patient with understanding. Time ripens and makes the flowers, grows trees, changes seasons.  Nature never rushes things.

The great poet Rilke once said when asked about training to become a master poet:

"In this there is no measuring with time, a year doesn’t matter, and ten years are nothing. Being an artist means: not numbering and counting, but ripening like a tree, which doesn’t force its sap, and stands confidently in the storms of spring, not afraid that afterward summer may not come. It does come. But it comes only to those who are patient, who are there as if eternity lay before them, so unconcernedly silent and vast. I learn it every day of my life, learn it with pain I am grateful for: patience is everything!”

No, its more of "Oh come on! I put a lot of effort into getting those 50 points yesterday. Why did I throw it all away today...?"

I don't get why you would be scared of losing rating, especially online rating.

I don't get why you would be scared of losing rating, especially online rating.

It is what it is