1. circling approaches, especially at night are difficult (we don't do them in the USA...VFR mins apply...not that that was the sole problem here)
2. night operations are difficult unless full instrument procedures and equipment are used.
3. there are airports in the world at which night operations of this type should be banned.
4. go arounds are hard if you are not ready. always be ready.
5. I know of many pilots who lose it in go arounds...sometimes insufficient power, illusions etc.
6. the art of being a professional pilot has been decimated. good luck.