Best means to long term link building

What is the best strategy for long term link building to help off page SEO for your website.
Well it's a mix of things that need to be focused on and can be a little expensive if you choose to use the complete array of options but ultimately it can allow for many great quality backlinks to be acquired for your website.
The best one is to have guest posts made on high Domain Authority (DA) forums and webistes.
Then is the process of forming your list of links.
Then comes social media backlinks to your website
And lastly the most expensive but highly brand credible means is the use of influencer marketing to help increase the credibility of your domain.

It can sound like a complex set of steps but once you get the hang of it and utilize it to the best possible way then you're guaranteed for success.