One more incentive can be learned from the verse, ‘If you seek it like silver and search it like a treasure’, that also after learning one should be overjoyed with his fortune just like he would be if he made a windfall, especially after finishing a maseches. The Zohar says that someone who finishes a maseches inherits a whole world. Obviously the converse is true as well, and if a few days passed that a person did not learn in, he should feel like he lost a unique opportunity.
One could expound more on this verse, but the rule of thumb is, that whenever a person has a decision to make about learning Torah, he should remember this verse and consider what a business person would do if he had a similar dilemma, and consider Torah no less valuable than money.