to start having doubts about a decision you have made
निर्णय पर संदेह करना (nirnay par sandeh karna)
"I'm having second thoughts about buying such an expensive car."
"मैं सेकंड थॉट्स महसूस कर रहा हूं कि इतना महंगा कार खरीदूं।" (main **second thoughts** mehsoos kar raha hoon ki itna mehnga car kharidun)
something that is your responsibility or job to handle
In a situation that is unknown or unfamiliar.
to carefully consider the advantages and disadvantages of so...
a sudden and significant progress
a fundamental change in approach or underlying assumptions
to come together around someone or something