Changing website title meta tag often good or bad for SEO?

Reading some replies on seo Forums I have stumbled upon a post which was saying to increase rankings in Google you often need to change your website title meta tag what do you think about it?

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Well if your website is not ranking high for any of your keywords then YES it's better to change website meta tag title and then after you change it a few times check your Analytics report for traffic or manually check if your website is showing for the keywords you are targeting

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NOPE if you change your website tile too often Google will never have a chance to properly associate your website with some search query.

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