Cursed by Heaven, Instead I Become Stronger is a Manga/Manhwa/Manhua in english language, Manhua series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The male protagonist crossed over and received a cursed system, which made him stronger as long as he lay down or gained the negative emotions of others, so the male protagonist began to lay flat and live a life of salted fish to upgrade.