Tired of my business

I am tired of my business. I feel like i just keep sinking money into it and get minimal return.

That’s my thought. My feel is frustrated. I thought about quitting for the first time in 8 years. I’ve seriously considered getting a job working for someone else.

I feel frustrated by these thoughts and also think nothing is working.

Is it ok to change my thoughts or should I work on feeling this frustration? These thoughts are making me so tired.