Yes, it is now possible to reset your Merge Mansion account by yourself!

Remember that resetting your game will result in the loss of all of your previous progress. Continuing to play and completing the tasks in your Task Lists is always faster than resetting your progress, no matter how difficult things may look. Collecting XP Stars, Bronze Coins, and Energy by double tapping on them will also help you keep your Garage Board more manageable.

You can reset your game by going to the main screen's 'Settings' menu and clicking the 'Reset Game' button in the bottom right corner of the pop-up window.