It's certainly been a while since some of your work has popped up on the radar and I have to say that you have certainly ceased to grow. Your work here certainly shows that you have perfected and understood much more about the expressive side of anatomy and working much more with the body language of a character this time round than before. What you've done in terms of the anatomy really shows vitality and in particular the way you've approached Tails with how he squats forward with interest of what's out front, certainly this shows the growth in your know how of portraying the anatomy of a character to say what you want without resorting to text or other indications to make the point. It's a nice touch like that which makes your work vibrant and one that really shows just how much attention and love you put into your work to make it stand out so well amongst the crowd. Likewise, it feels that Sonic could have had a bit more added to him as well in terms of posture, though good, it just feels that compared to Tails he seems less excited about what's ahead than anything else. It makes Tails appear as the dominate one of the two and seem to take charge of a situation as seen here. Never the less, it is still strong and you show that you understand the characters to reflect what you wish to in your ideas.
The only down side is to have had something just a bit more in the background, seeing something even such as a sea shell, star fish or nay even something in the background far off would have been nice to see just to ramp it up a bit. It feels more like a dessert island than a exotic beach, so the inclusion of something just a tad more might have helped to give their location more zass.
whatever piece of hell that is putting you on the verge of stopping can't last forever but if you do stop then you have a lot of support from other people on here. I really hope things can work out but as someone thousands of miles away i can't help much but i will ask that you not give up and find something inspiring that you can support be it drawing, your job, or whatever you find fun