“Relax” is a verb refering to behaviour that results in you becoming less, tired tense or anxious.   I wonder if you avoided stress in the first place, whether relaxation activities would be required.

Relaxing can address the symptoms but eliminating the cause of tension or anxiety resolves the root cause and seems to be a more sustainable solution.

But Wait

Another consideration is whether stress has value.  If it does, eliminating stress before it occurs could create a different problem.  Perhaps the cycle of stress and relaxation in and of themselves are needed and contribute to your personal well being.

It is a kind of a circular argument, but, I like to relax.  if I was never worried or stressed out, making me tired I would have nothing to relax about.  So I need to be stressed.

With no reason to relax, I would miss this enjoyable activity.  That might stress me out.  The cycle of stress and relaxation would still proceed but in reverse.

Is there an Answer?

Stress is an important part of your life.  Eliminating stress (supposedly addressing the root cause of your tension and anxiety) is not a solution.

Embracing stress, leveraging the motivation and emotions it drives, to drive achievement and personal satisfaction is the answer.  And of course falling back on the enjoyment of just relaxing from time to time keeps everything in balance.