I had a fairly recent DM conversation with Nishant Kothary (@rainypixels) about our love-hate relationship with Twitter (you can read his thoughts in detail here and here). For me, not only can Twitter be addictive, it is more often than not the promulgator of a down-spiral of self-flagellation based on comparing myself with the perceived achievements of others.
My anecdote to this pernicious virus? Boundaries. Rules. The first is a physical practice: to maintain my equilibrium, I only read @mentions and DMs. The second is a mental practice: be self-referential. There is a saying that you can’t judge a person’s outsides to your own insides. So, instead of beating myself up over what I have not done yet, I make a concentrated effort to look back and give myself props for the things that I have done and the progress that I have made in my life and career. If your inner critic is working overtime (I’m working on firing mine), then focusing on your own process and how you feel about it usually helps.