Is it a wise choice to change job simply from being "tired" of it? I've been working in the audit industry for 8 years. I am quite tired of what I've been doing and thought about changing industry.?

Why not just give it a try ?

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Or take up freelance work for the newer industry and see how things work out ?

https://snmpanel.com/

It doesn't sound like there's any external push factors e.g. abusive boss, toxic environment, lower-than-market salary etc. It sounds like the job is giving you sufficient cash to do what you want/need to do and sounds like stability is something you crave and (surprisingly to me) this job seems to give you that stability. One alternative is to jump to another even-more-stable place if stability is what you crave? In any case, APPLYING for jobs doesn't change your stability so i encourage you to go for a couple of interviews a month.

First ensure that you have sufficent back up plans or reserve.

Do something on the side to have a taste of other work.

See if there is a demand and prove that you are able to handle the work of the new industry.