Are there habits that make bladder stone more likely?

A tough question. Yes, but these habits may be significant for some and not for others since people vary in food/fluid intake mix. Being chronically dehydrated, lots of dairy intake with recurrent utis and lots of ice tea is one example since the phosphate from dairy precipitates in alkaline urine. In short, adequate hydration and moderation in meals + citrus intake e.g. Limeade are good habits to fend off stones.
Water intake. Not drinking enough water makes the urine more concentrated and facilitates the formation of urinary stones in the kidney and bladder. Depending on the type of stone, altering the pH or urine may affect stone formation.