
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the function $f(x)=\ln x-a(x+1)$, where $a\in\mathbb{R}$, the tangent line at the point $(1,f(1))$ is parallel to the $x$-axis.  
(1) Determine the intervals of monotonicity for $f(x)$.  
(2) If there exists an $x_{0} > 1$ such that for all $x\in(1,x_{0})$, the inequality $f(x)- \frac {x^{2}}{2}+2x+ \frac {1}{2} > k(x-1)$ always holds, find the range of values for $k$.

Present the answer in LaTex format: \boxed{Your answer}
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