to start having doubts about a decision you have made
начать сомневаться в принятом решении (nachat' somnevatsya v prinjatom reshenii)
"I'm having second thoughts about buying such an expensive car."
"Я начал сомневаться в покупке такого дорогого автомобиля." (ya **nachal somnevatsya** v pokupke takogo dorogogo avtomobilya)
to retreat or withdraw from a situation
to make significant progress or improvements
to set ambitious and visionary goals
to use all your strength and determination to achieve someth...
to focus on a smaller area or set of options
to spend time doing casual activities
