1st Try
Try the tabbing environment and next time please provide a complete example (including documentclass etc.)
The first line defines the tab position.
\documentclass{article}
\begin{document}
\begin{tabbing}
longestlongest \= long \kill % kill -> do not print this line
good \> padding \\
notbad \> padding \\
it overlaps \> padding \\
\end{tabbing}
\end{document}

2nd Try
Now I use a tikz picture but I don't know how to left align (align=left) it without using text with. Maybe an expert can help us out.
\documentclass{article}
\usepackage{tikz}
\begin{document}
\parindent0mm
\section*{With Frame}
\tikz[baseline=(O.base)]{\node(O) [baseline,draw,minimum width=15mm,inner sep = 0,align=left] {good};} padding\\
\tikz[baseline=(O.base)]{\node(O) [baseline,draw,minimum width=15mm,inner sep = 0,align=left] {notbad};} padding\\
\tikz[baseline=(O.base)]{\node(O) [baseline,draw,minimum width=15mm,inner sep = 0] {it does not overlap};} padding\\
\section*{No Frame (\texttt{draw} removed)}
\tikz[baseline=(O.base)]{\node(O) [baseline,minimum width=15mm,inner sep = 0,align=left] {good};} padding\\
\tikz[baseline=(O.base)]{\node(O) [baseline,minimum width=15mm,inner sep = 0,align=left] {notbad};} padding\\
\tikz[baseline=(O.base)]{\node(O) [baseline,minimum width=15mm,inner sep = 0] {it does not overlap};} padding\\
\end{document}
I used this question for help.

\parboxorminipage? Please give us the code for the output and not the output (or not only the output, at least). A small, complete document we can compile is best. – cfr Nov 01 '15 at 02:33parbox, actually it behaves similarly when used inline. e.g. in\parbox{2em}{long long text} and else, "long long text" will still overlap with "and else". – shouya Nov 01 '15 at 02:49