to allow natural processes to happen without interference
自然の成り行きに任せる (shizen no nariyuki ni makaseru)
"Sometimes the best solution is to let nature take its course."
"時には、最良の解決策は自然の成り行きに任せることです。" (toki ni wa, sairyō no kaiketsu saku wa shizen no nariyuki ni makaseru koto desu)
To use all your energy and resources to achieve something.
building a business without external funding
to have a fondness or affection for something or someone
to consider something carefully from all angles
working very hard without enough rest
to sound familiar or remind someone of something