万事开头难(wàn shì kāi tóu nán ) All things are difficult before they are easy.

Meaning:the character“万事(wàn shì)”means all things,“开头(kāi tóu)”means beginning,“难(nán)”means difficult.

For example:

你耐心一点,万事开头难。
Be patient,all things are difficult before they are easy.