I have been playing Go spasmodically for around 4yrs, sometimes playing frequently and at other times not playing for weeks/months.
Like many i`m a chessplayer who can play Go but i`ve never really applied myself, and as a consequence of being a spasmodic player have probably picked up a lot of bad habits.
As i`m finding chess less of a challenge and Go more so, i`d like to apply myself a little more seriously to improving, and despite being the wrong side of 50yrs I don`t think achieving 10kyu is an unreasonable target to set myself ( i`m around 14kyu on KGS )

Any advice as to how I can eliminate ( or at least reduce ) some of the bad habits i`ve almost certainly acquired over the past 4 yrs or just gneral suggestions would be very much appreciated!

Yes, many of us amateurs are in the same boat.
Consider finding a nice teacher (preferably a pro who is also a good teacher)
to review your games and point out your bad habits one by one.
Then you work hard to fix them, one by one. No other way.
You can also post your serious games here on L19,
and get a sample of the freebie feedback.

There's a beginner page on sensei's library (itself a great go wiki, if you've never seen it). It will have lots of good links, including a few links to life and death problems.

Do problems. Once you figure out how to use it GoChild is nice.

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Sanity is for the weak.

Many thanks for the replies!!