Hexagram 11, Tài (Peace): Line 3
泰卦九三 · 地天泰 · 中文版
九三：无平不陂，无往不复，艰贞无咎。勿恤其孚，于食有福。
The line (Legge)
The third NINE, undivided, shows that, while there is no state of peace that is not liable to be disturbed, and no departure (of evil men) so that they shall not return, yet when one is firm and correct, as he realises the distresses that may arise, he will commit no error. There is no occasion for sadness at the certainty (of such recurring changes); and in this mood the happiness (of the present) may be (long) enjoyed.
Small Image commentary
'There is no going away so that there shall not be a return' refers to this as the point where the interaction of heaven and earth takes place.
象曰：无往不复，天地际也。
In plain words
There is no level ground that does not slope, no going out without a return; being steadfast in hardship, there is no fault. Do not worry: keep faith and there will be blessings to enjoy. The third line is at the end of the lower trigram: peace is past its midpoint, and fullness is about to turn. The Small Image says this is where heaven and earth meet.
Applying it to your situation
If things are going well, this line suggests being ready for change even in good times. If the tide began to turn, what would you hold on to first?
Position
A solid (yang) line in the third place, which is a yang (odd) place, so it is in its proper place. Its partner is line 6; one is yin and the other yang, so they respond to each other.
If this line moves
With this line moving alone, Tài changes into Hexagram 19 Lín (Approach). The Jiaoshi Yilin verse for this change (Chinese): 焦氏易林·泰之临.
The hexagram
Hexagram 11 Tài (Peace). The Judgment: In Tai (we see) the little gone and the great come. (It indicates that) there will be good fortune, with progress and success.
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English text: James Legge, The Yi King (Sacred Books of the East, vol. 16, 1882), public domain, as transcribed by the Chinese Text Project. Chinese: the received text. Offered for study and reflection, not as prediction. Plain-English readings and position notes by this site.