It's all very well accepting Nietzsche's conclusion that your own best rationalisations are the best truth you are going to reach, à la overman.  However, what is not stressed by Nietzsche is that these truths are nevertheless fabrications.

Schopenhauer advocated the benefits of taking one's mind off the turmoil of these fabrications by getting lost in art appreciation.  Buddha went straight to the heart of the matter:

> In the seen there will just the seen, in the heard just the heard, ...
> When in the seen there will be to you just the seen, ... just the
> heard, ... then Bahiya, you will have no ‘thereby’ ... no ‘here’ or
> ‘beyond’ or ‘midway between’. That is just the end of suffering."
> Udana, 8, SA, 312, 90a, [SN, IV, 73 (35, 95)](https://www.accesstoinsight.org/tipitaka/sn/sn35/sn35.095.wlsh.html).

Kant and Heidegger seem to soft-pedal on this wisdom, perhaps for religious-sensitive reasons, but Kant makes the effort to point out that phenomena are not the 'things-in-themselves', i.e. the phenomena are fabrications, mind-made.  Heidegger is at pains to move on from beings and focus on Being.  He might have covered the benefits of this more in [Mindfulness](https://www.goodreads.com/en/book/show/224830), (which I have yet to read).  The direction of travel is quite antithetical to Nietzsche's assertiveness.