Better:

1. Set 10:00 am as the start of working time for all high schools and companies.
Because I don't want to see students and people very tired, saying they don't want to go to High school/Company.If they are tired, people would lost their happiness.
2. Make more funny and happy concerts.
-To make Korean people always happy  and for them to have fun.
3. Always work your best.
-If you work your best, good result would always come to you.
4. Don't think about your bad memories, think about your good ones.
-If you think about good ways, your life would be always happy.
5. Think that you are always free.
-If you think you are always free, your work would be easier.

Explanations:

1.The modal verb 'would' is used with if in conditional sentences(= sentences that refer to what happens if something else happens)
2. Be mindful of the correct spelling of words.
3. The word 'fun' is a noun which means  'enjoyment'whereas the word 'funny' is an adjective which means 'humorous or causing laughter'.

Comment:

I am very delighted to read your homework. These 'laws' that you want are very positive! Keep up the good job.

Come