Just because something sucks it doesn't mean it's all bad. You could be very close to making something something awesome. The devil is in the details.
Take for example the Sennheiser TW3 earpods, compared to the TW2 they upgraded the touch pad experience and made the earphones lighter. The result is phenomenal, now I love them.
Even if in TW2 they had nailed the sound (arguable most important) but they over-engineered the touchpad functionality (pausing music was too complicated). All they had to do was make it simple. It's often that simplicity beats complexity. Make something simple that works.
In your creative work, company, passion, whatever, you can make small incremental improvements* in the details and the result might be radically better. You might already have 80% done correctly, but 20% in the details suck. Identify what it is and make it great.
*Kaizen – “a Japanese philosophy of continuous improvement” is a traditional Incremental Innovation framework to bring evolutionary change in the existing processes.