Self-publishing a novel, say

• What a big winner might be on
• Hardly an instance of modesty
• Vanity affair
• A star might go on one
• It may end with a reality check
• Journey on which you can enjoy yourself
• Self-indulgent "journey"
• Display of self-importance
• Vain display

Wikipedia Word definitions in Wikipedia
Egotrip was a successful but short-lived Brazilian pop/rock band.