"..若执着于定中无思(或空),死后会投生到无想天或畜生道,因为没有智慧观察故;若执着于定中光明相,死后会投生到色界天;若执着于禅乐,死后会投生到欲界天..." - but if I want to 解脱三界轮回, want to go to heaven, what do I need to do??? thank you!