Is 301 redirects going to hurt my Blog?

[frank]

Suppose, you are giving any updates say 'best phones of 2015', your url had been indexed in Google. And now the year passes and becomes 2016, and for sure you are going to give updates of 2016. So, you change the url or redirect it from the previous post to the new one. It is completely safe and legit according to all search engines. After changing it may occur that the new url took some time get ranked as the previous one but its alright you will get to your original position eventually.