I'm also a big DBT person, although I definitely lean towards many of the distress tolerance skills a lot of time, especially TIP, ACCEPTS, and Self-Soothe. For the core emotion regulation skills, I use a lot of Check the Facts and Opposite Action, as well as ABC Please. I also really like ACT-style cognitive diffusion exercises. (I work in an inpatient DBT facility and my outpatient work is typically DBT-informed.)
One weird wild card: I really like Tayyab Rashid's Positive Psychotherapy Clinician's Manual. -- https://www.amazon.com/Positive-Psychotherapy-Clinician-Tayyab-Rashid/dp/0195325389/ref=sr_1_3?dchild=1&keywords=positive+psychotherapy&qid=1602100468&sr=8-3 ; It's got a lot of great strategies for improving wellbeing and emotion regulation with strategies focused on positive emotions. I feel like I can get buy-in from a different type of client using some of these exercises sometimes. A note that I have never used his full procedure; I usually am al la carte-ing it with a more established overall modality.
It sounds like you are looking for a direction here.
This is a great thing to talk about with your clinical supervisor.
However, if you are willing to take a leap of faith: One thing I have found really helpful for high functioning clients is to take a leaf from positive psychotherapy -- (The book is basically a clinical manual. It's hard to find in libraries, though, unfortunately!) https://www.amazon.com/Positive-Psychotherapy-Clinician-Tayyab-Rashid/dp/0195325389/ref=sr_1_1?keywords=positive+psychotherapy&qid=1568808796&s=gateway&sr=8-1 I actually do a fair number of positive psychotherapy interventions with clients who are struggling a fair bit, as well, and they are usually received quite positively by folks with a pretty significant range of clinical presentations.
I've also found that some clients need to start somewhere more like this and then will move into a more process-oriented place later on.