That really depends on how you define success.
Going to other hub pages and reading and commenting on other hubs may get you some followers but if you are looking to make money from this site those actions will not help. For me, being successful means having a lot of people read my hubs every day. I am successful.
If you want to make some money here, the only to do so is by writing original content that others will want to read and share. After you have some hubs written in one niche, read the SEO information by Writer Fox, the information on HP written by relache, getting more traffic by Barbara Kay, writing titles by Marisa Wright, and the Pinterest info by WryLilt.
With all of that information, and good articles that provide original content, you can write popular hubs that will have plenty of traffic. Will you make a lot of money here? No, if that is your definition of success you will probably not make it.