I often find it helps to take a broader perspective on things and reflect on how we attribute importance to things in our life.

Ultimately, it's never good to take things too seriously.

As for persevering, I think it comes down to thinking about alternatives. It takes perseverance to write a blog post and work out regularly, but what other options do we have really?

It's either doing what we want, or giving up and doing nothing. If you put like this, the choice is really obvious.