When it comes to finding synonyms for the phrase "slip into," there are a few options that convey a similar sense of ease and effortlessness. For example, you might use "ease into," "settle into," or "sink into" to describe the act of transitioning into a comfortable position or state of mind. Similarly, "slide into" or "glide into" suggest a smooth and effortless transition. Additionally, you might use "adopt," "assume," or "embrace" to describe the process of taking on a new role or mindset. No matter which synonym you choose, the important thing is to capture the sense of gradual and seamless transition that the phrase "slip into" suggests.