Relationships are not easy. As people, we learn how to navigate relationships using skills we gathered from our own lived experiences and childhood examples. Which can be part of the problem.
Making and keeping friends, being in healthy romantic relationships and being able to work well with a wide range of people are all skills that we need in adulthood. However many adults have never been actively taught any of these skills.
Luckily there are options for helping adults improve the quality of their interpersonal skills. This is where social-emotional learning (SEL) comes in.