Suicide is not simply a single cause. Those who have taken their lives had much deeper issues than being in the horse world. We can be sad about their situation but they are the only ones who can fix themselves. All we can do is live our lives and hope they somehow see a path using our example as a guiding light.
Burning out due to death is not unique. Look at the worlds of emergency services and the military. Those who survive, and maybe even thrive, in those situations are able to define what their own life is to themselves. They can be sad but still find joy in simply being alive in a moment.
I would suggest you seek some aid in dealing with your feelings and perceptions to enable you to find what gives you purpose and joy at the most simple.
As I said, to me competition is more than competing. Yes, I love running fast and jumping big things. Getting a ribbon is fun too. BUT, sitting by the schooling ring watching low level rides, sharing a lunch and soda, talking about the past with friends, rooting for terrified kids or adults at their big competition, enjoying the sun and solitude as your horse munches hay, that is what makes it all worth it for me.
Here is the only video I took at an international competition. At the end of the day where we had two stops on course, I am in shorts and flip flops, most of the competitors have left and I still felt more peace than I ever had winning at the FEI levels or the A/O jumpers. Maybe that tells you where I am coming from.
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