A meaningful job is only a part of building a meaningful life. The questions your asking may be a sign your placing too much existential weight on a job instead of actively working to have a meaningful life in every aspect.

Are you actively building meaningful relationships, maintaining the old ones and seeking out new ones? Are you involved in communities around shared values? Do you invest in personal goals outside your career (hobbies, music, art, etc)? Are you challenging yourself physically in some sport or activity your passionate about?

Work is a big part of the picture, but if you are focused on growing intellectually, socially, spiritually, and physically (whatever those may look like to you) a job takes a much smaller role.