The morning sun never lasts a day

This would appear to be a variation of "Make hay while the sun shines". The sun might last for a day but the morning sun is different from the midday sun or the evening sun. For a start, the range of temperatures varies considerably. We might also be more enthusiastic and energetic in the morning. "Well begun is half done" so it pays to get off on the right foot.

"The early bird catches the worm" so it knows the advantage of an early start. There are many sayings that stress the importance of the beginning. The rising of the sun heralds the start of a new day, the cock crows and a new round of activity commences. Be part of it.

Every horse thinks its pack the heaviest

Everyone Carries a burden of some sort: emotional, financial or relationship related. We feel the stress and strain and it hurts. When we're children we learn to keep many of our worries to ourselves. Nobody likes a whiner.

Our friends might be putting on a brave face and so we do not know that they also are suffering. We think it is only ourselves. Sometimes it is only when we reach breaking point and have a row that we learn of other people's difficulties. They might be having a more difficult time than we are.

A burden shared is a burden halved so learn to get on with others.

Elbow grease is the best polish

You can sit about for ages making great plans and forming great schemes but unless you take action nothing will happen. Having a clear idea of what you're going to do before you start is a good policy. Well begun is half done, but without steady effort there will not be a good outcome.

In order to motivate your self it sometimes helps to visualize the end result, to continue the metaphor, the effort of polishing results in the smart appearance of your shoes which might just tip someone's opinion of you to favorable. It is the carrot on a stick that keeps the donkey going.

So whatever it is you are planning to do roll up your sleeves and get stuck in.

Deep waters run still

We have all delighted at the sight and sound of a babbling brook. The foamy, silvery, bubbly water chuckles merrily over the pebbles. A deep pool is dark and mysterious. Perhaps fat trout lurk in its depth.

This is a simple, long used metaphor illustrating the different types of human mind. Some people chatter away and say very little. Other say little but convey a lot.

The chatterbox broadcasts every simple thought that occurs to them. The deeper person weighs ideas carefully and selects only the best. It is from them that we get "the fattest trout".